From what I’ve gathered, there’s a decent amount of widespread bitterness out there about mastodon and gargron’s choices exactly like what you’ve just expressed.
Mastodon is gargron’s personal project. He runs exactly how he wants to and doesn’t care too much about what others think. Except it’s the one big player on the fediverse and has been put there because of a lot of other people’s work and adoption.
It’s influence and dominance over the fediverse is likely a serious problem because of exactly what you’re talking about. There was a moment last year when fedi-enthusiasts kinda realised that some platform diversity is likely necessary in the fedi microblogging space. Some efforts were made (firefish was the one I was closest to), but no real inroads were made.
Personally, I’d like to help the threadiverse (lemmy and other group-first platforms) provide that diversity. I think these platforms can grow into providing user-based features similar to k/mbin but in a way that’s not beholden to the microblogging baggage of twitter while also providing other features, structures and spaces.