Okay, back to trying to respond to this SINGLE post
Just because they don't feel comfortable with low con, does not mean they do not try to be good at "other things". Additionally, think about what Actor does before you start casting shade on people who don't take it. Actor is only good for pretending to be someone else or mimicking a voice. And when I have had those people, they often are playing Changelings, or Warlocks with MAsk of Many Faces, or they take Eldritch Adept to get Mask of Many Faces. They don't play fighters who take Actor, and who also need disguise kit proficiency.
I am not casting shade on anyone. I am pointing out that players purposely build these classes to be good at combat and that is why those characters are only good at combat.
A few assumptions here.
1) You seem to assume that a high level party will face only CR 15 or above creatures, and they will all be in the same fight. Also, the first 10? So... adult dragon, adult dragon, adult dragon, adult dragon... The immune to fear was likely the Death Giant Shrouded one. So, what? You expect a party in a normal game is going to have multiple encounters that contain multiple adult dragons of different types teaming up with an elite death giant?
I know they will because I play a lot of games at high level.
Pick any 10 in order and you will find the same.
At high level most monsters that matter will have resistances, immunities and legendary resistance.
Descent into Avernus, at level 3 MOST enemies you are facing have magic resistance. That is at level 3.
Let's look at another published adventure, Dungeon of the mad mage:
Level 15:
Enemies with significant condition immunities, Legendary Resistance or Magic Resistance: Ghost, Death Tyrant, Living Unseen Servant, Adult White Dragon, Stone Golem, Vampire, Nycaloth
Enemies without those things: Lava Children Skeletons, Drow, Mephits, Mage (and the Mage that is has counterspell)
Level 16:
Enemies With: Crystal Golems, Adult Red Dragon, Mind Flayers
Enemies without: various Githyanki, Young Red Dragons
Level 17:
Enemies with: Neothilid, Mind Flayers, Scaladar
Enemies without: Githyanki, Orogs, Troglodyte, Vetran, Dueregar, Grimlocks
Level 18:
Enemies with: Bronze Shadow Dragon, Death Knight, Vampires, Shadow Assasins
Enemies without: Vampire Spawn, Swarm of Rats, cloaker
Of note, there are things that don't have these, but you should roll over most of those creatures at this level and you are not using your powerful spells for them.
2) While yes, higher level spells are often stronger, that doesn't mean low-level spells are weak. Web is an example I bring up fairly often, it is a low level spell, and not an IMMEDIATE fight ender, so will the DM use a legendary resistance on it? But, if you fail the dex save, then it takes an action to break out. And if you are trying to make distance, this can translate into two turns of the enemy being unable to hit the party, while granting advantage to the parties attacks. And the fighter.... can't replicate this, unless they take the web spell. The only fighter who even has an ability to restrain an enemy AT ALL is the Rune Knight, and it is a save at end of turn and fire damage.
If you are not immune to restrained and you fail the save. Web is a good spell, I am not saying it isn't. But it is situational at high level being restrained is not nearly as bad for an enemy as it is at low level.
A high level Rune Knight with athletics proficiency can fairly reliably put a huge Dragon prone and grappled in a single turn. As far as conditions, this is generally better than being restrained in a web, the Dragon can't use Legendaries to stop it because it is a contest and the Dragon needs to make a strength check which he will likely fail to try and get out of it. It also takes effect immediately instead of waiting until the Dragon's turn and the RK can move the Dragon wherever he wants and he does not need to retain concentration.
To compare these:
Against Web an Adult Blue Dragon has a 40% chance to fail a DC18 Dex save and a 50% chance to make the DC 18 Strength Check if he fails and that is if he chooses not to use a legendary.
Against a RK trying to grapple and prone, the same Dragon has over a 90% chance of failing at least 2 of 3 strength contests against a +10 with advantage. Once he is grappled and proned the chance he can break free with an action is less than 20%. He can't use a Legendary against this either. To add incult to injury over half the time the Fighter will do it in 2 of his 3 attacks and be able to pound him with advantage using his 3rd attack.
I am glad you find joy. I would not be happy to realize that my entire character is a footnote in another character's abilities. In fact, I have often been annoyed by that.
I am never a footnote, but niether do I get jealous and upset because someone else has a stronger character. You be You, let me be me.
I can play any class RAW to 20th level and be effective, why should I worry about if another character at the table is better than me?
I mean it is a team game anyway, having someone else who is more powerful makes the entire party more powerful.
But more importantly, you keep missing the point. Your fighter was good as the face because no one else wanted to be the face.
We did have a Paladin and he was planning to be the face. But I boosted Charisma on my fighter, while he boosted strength first and then Constitution with his Paladin.
I was a better face than him because of choices I made in my build. I don't think I stole his role, his chassis is actually more suited to that, he just did not choose to invest as much as I did.
And, while yes, it is a team game, if you consistently make it so that only spellcasters can reach the heights of certain pillars... then you are going to consistently see spellcasters taking over. And then someone who doesn't want to play a spellcaster is either going to be forced to change their concept, or be a less effective team member.
It depends on what you mean by caster.
I have not seen full casters take over in 10 years of playing 5E and I see as many non-full casters now as I did in the beginning even though the gap at most levels has widened
If by "caster" you are including the Monk, Rogue or Fighter that gets a spell through a race option, then sure casters have taken over the game, but I don't see a problem with that as lots of people are still playing those non-caster classes.
Also you seem to be ignoring that this is very specific to level and class. Wizards are overall the strongest characters in the game, but they are not the strongest at every level.
I'm facing something like this right now. I made a Beast Barbarian with a focus on stealth and hunting... and another player came to the table with a Gloomstalker Ranger/Rogue. I wanted to be more than just the big, strong tough guy, but I'm completely overshadowed in anything dealing with stealth and tracking.
I think this is just petty. It is pouting. It is like playing a game of basketball with your friends and being angry that your teamate can dunk and you can't.
Also, Fey Wanderer can match someone with Expertise, but it doesn't nullify all the OTHER things a face character can do (as long as that face is using magic) And maxing Wisdom while getting a 16 Charisma.... doesn't leave a lot of room for Dex, and being a martial character.
A Fey Wanderer can bury a Paladin, Warlock, Wizard or Sorcerer. They get spells, including Charm Person and have Beguiling Twist on top of that.
Fey Wanderer is really the only Ranger I play anymore.
I am rarely attacking at high level with a Fey Wanderer. Extra attack with Favored Foe and Dreadful Strikes is a nice fallback option, and I also usually have Shillaleagh and Magic Stone through a fighting style to use Wisdom, although the bonus action tax can be difficult to manage. In truth though I am using spells (or magic items) most of the time in meaningful combats when it matters. In really tough combats I am spamming Concentration-Free Summon Fey and then twisting their charms when someone saves.
None of this makes them any less optional. Martials need to work WITH and WITHOUT feats.
Why when feats are available?