Hussar
Legend
Not according to this poll: https://www.enworld.org/threads/do-you-see-fighter-players-at-your-own-table.698254/The idea that nobody cares about MOST combat encounters they play in D&D is...a weird position to take from my perspective. If all I cared about were the boss fights, I wouldn't play D&D. They're not "samey" fights nor "trash mobs", they're just not the boss fight, and of course they matter. This isn't Critical Role or a video game...we're playing a role playing game my man. They play IS the purpose.
And given most groups have more than one non-caster in it, did you really think those players were not having fun with their non-casters?
Just about half of parties in the poll have 2 or more non-casters. That's certainly not "most".