It's not really arguable. The facts of the mechanics speak for themselves.
It is entirely arguable, but not worth doing since what constitutes a strong class is entirely subjective. Some favor DPR, some favor flavor, some favor other things. A half-caster Bard truly can be a
Jack of All Trades and is not meant to rival classes who have a stronger focus.
Can they fight was well as fighters? Cast as well as casters? and so on? No, but they can cast better than fighters, fighter better than casters, and so on.
By that "every round" logic, Paladins can't spam Smite, so you're what, refuting your own claim? That's confusing lol.
They can't do it with every
attack is the point, they can do it each round sure--just like a caster can cast a leveled spell each round if they wanted. And frankly, they have few enough slots that even then smites are often reserved for crits, so they count more.
By spamming I would mean with Fireball that the vast majority of combats, certainly every one with groups monsters, involve the caster casting one or more Fireballs, and it being their default approach to groups of monsters.
IME it might be the opening salvo for an encounter, certainly, but hardly used even close to the "every round" you're implying.
You keep saying this, but it's extremely vague to the point of meaninglessness without clarification. How often does magic have to be cast to be mundane?
It is entirely subjective. For some people if casters could cast
TWO spells per round, it would still feel magical, to others allowing magic only once per encounter might do it. Obviously most people are in between.
For me, spamming the same cantrip, round after round, instead of focusing more on using leveled spells is mundane and boring.
The same amount of magic is being used. If anything, your approach slightly increases the amount of "serious" magic being used, which surely makes magic more mundane?
It isn't the same amount. Those attack cantrips are being used less and leveled spells more. Using more powerful magic, and often in more meaningful ways, does not make it mundane.
If fighters had better options that just making weapon attacks, such as using tactics, maneuvers such as shoving, disarming, etc. which were designed to be as effective as simply dealing damage, it would be the same thing.
In media you don't see martials whack-whack-whack all the time. You see them change position to get the upper hand, punch, kick, trip, shove, and all sorts of other things that in D&D because they don't deal damage are sub-optimal to attacking. FWIW, we are trying to fix this as well so martials have a more exciting and engaging game than just whack-whack-whack.
So does it make sense we have been able to do that for casters? Instead of just
pew-pew-pew they are encouraged to use leveled spells, creating a greater impact than simply doing damage and having more fun in the process.
I know everybody plays DND at their tables differently and by their way, and there's nothing wrong with that. But it still kills me how everybody has an issue with 5E's Cantrips.
When it makes for a mundane and boring experience, yes, I will take issue and try to change it for the better.
I mean, you all realize there are groups out there who have
entirely removed attack cantrips from their games, right?