Lyxen
Great Old One
Oh, how interesting! It's not usual for me to deploy an example of play from another game and be told that it's unfair because that game clearly does this kind of thing better than 5e because 5e is more susceptible to the bad thing being claimed.
Please learn to read, this is not what I said, and in particular did not use the word "unfair". On the other hand, this unfair twisting of my words hardly puts me in a mood for a fair discussion.
And yes, D&D in general is more subject than most RPGs to being played competitively, since it was the stated intent of 3e and 4e. although it is clearly no longer the case in 5e). In particular, people playing CaS and insisting on RAW have a tendency to require skilled play, including using it as a kind of entry barrier into their game, and looking down on "unskilled" people (because it hampers the efficiency of their party). I've seen that many times, in particular on other forums, but also experienced it directly at some tables.
Ane even without that, there is a second negative phenomenon, which again we've experienced a lot at our tables until we took steps about it, which is the "uncertainty paralysis" of a player who is not sure that he is picking the "most skilled" option when taking his decision, and who is afraid that he will either be made fun of, or even scolded for not taking the optimal action. Not only does it make these people stressed about playing the game, but it also creates a bad ambiance when allowed to fester. And it also leads to many discussions and suggestions when these people turn come, leading to very long turns, with a lot of arguing.
I mean, I think you're wrong -- 5e does this the same way -- but very interesting to defend your argument by just straight up saying D&D is worse off in this regard. It would be refreshing if not so badly wrong.
It's actually easy, see above.
So, ahem, a 5e story of skilled play, from a recent session of the game I am playing in. We (the party) were exploring a duergar stronghold we discovered, and had fought through a few defenders already. We were exploring a room that had a clear chokepoint, where the room narrowed (like an hourglass) to funnel attackers. A lever was described on a wall past the narrowing next to a doorway. The clerics, a PC of another player, approached the narrowing first and went through. As he did, a duergar hiding under invisibility appeared next to the lever and pulled it down, triggering a trap we had not detected (or really looked for) of a series of spikes plunging up from the floor and down from the ceiling in the narrowing! The cleric was trapped and took damage due to a fail saving throw and was now restrained in the spikes. Meanwhile, the spikes effectively created a 5' deep portcullis barring passage through the narrowing. The duergar moved from next to the lever up to the cleric with the clear intent to attack the nearly helpless cleric. My PC's action was next (my PC is a warlock). Noting the situation, I cast mage hand and reversed the now unattended lever (it was within range, which I could verify prior to casting because we were using a battlemap with tokens). The trap was released and the advantage the duergar was removed.
Great, and I once worked in coordination with a warrior to recover an enemy's weapon knocked from his grasp by a disarm attack using a mage hand. Does this mean that I do Skilled Play too ? That I'm worthy of being recognised as "skilled" ? Do I get a pass from you all "skilled players" ? In addition to the competitive aspect above, the arrogance of considering one "skilled" compared to probably all the "unskilled" people out there bugs me.
In another instance later in the same session, a duergar had gone invisible and successfully hidden and evaded us. Wanting to mount immediate pursuit but recognizing that we were at a disadvantage (using your action to search while the quarry could dash meant the quarry could rapidly escape us while we were looking), I used my grey bag of tricks and pulled out an animal. Many of the results on the random table for the animal you could get have keen smell abilities, so it was a reasonable gamble that I could get an animal that would be very useful in tracking down the fleeing duergar. Indeed, I was lucky, and the resultant badger was very helpful in tracking down and capturing the duergar.
And I once used a Detect Gold spell to track a dwarf, assuming that he had gold on him because dwarves are greedy.

What is exactly the point of these examples ? We all have tons of anecdotes like this and I'm not saying that they are not nice to have, but I fail to see exactly where the particular "skill" is. Yes, it makes you feel good, and it probably makes you feel even better to brag about this here in great detail. And it probably made you have fun during the game. But beyond that ?
Ah. Your argument is that if the player were to engage in skilled play and recognize that the game thwarts normal logic with it's mechanics and choose to engage the mechanics instead, this would make your games less fun because you find having logical outcomes be thwarted by game mechanics to be the more enjoyable outcome.
I said nothing of the kind. Once more, read what I wrote rather than writing your own version.
Sure, more power to you. If I enjoyed that, I'd find skilled play to be less fun as well. I am, however, glad we've moved past the claim that skilled play is all about being competitive.
No, we have not, see above. In my experience, it's mostly about being competitive, and in the end a lot about bragging (and possibly discriminating and looking down on "less skilled" people). Neither of which is what I'm specifically looking for in the game as, again, the objective is just to have fun with friends.