Myself, I know my limits and just don't have fun doing group content. If I've soloed most of the time having fun in my own way, and being forced to group to keep going with the story. I've been playing my fun way for so long, trying to do it a way I don't enjoy would just make me a worse dps

.
But like I said I'm a bad example. I'm very laid back and accept things how they are. I don't think your views are wrong, I just accept things how they are and how people are. I got really no right to ask players to play better.
Asking for players to play better is pointless.
Asking for the game to be harder, will just end up wasting your time even more. It won't force players to play better.