The things that annoy me about some Lemmy users are the same things that annoyed me about some Reddit users (lots of frequently upvoted meme subs that don't work for me, posting ragebait, political compass subs, etc) and I'm dealing with them the exact same way I dealt with them at Reddit throughout 10 years: block and move on. The best thing about this type of forum is that you can heavily personalize your feed by filtering/blocking/muting and you'll still have some reasonably good quality content (which includes both your niches and the potential to discover either general or specific stuff you'll like) thanks to the upvote system.
I have been on Reddit for a few more years than you but never blocked anyone. Why not scroll past and move on? I find it weird to block or mute. On the other hand seems perfectly reasonable to curate your view to places you enjoy visiting. I don't bother (usually) seeing anything outside of what I am subscribed to.
And that is the reason I don't block anyone: they often are not in a place I visit OR they happen to be rational and interesting when it is not the crazy thing I might consider blocking them for.
But I understand your experience may be different than mine.
I don't have unlimited time to scroll through stuff I'm not interested in. In my previous post I mentioned the few things that kinda annoy me but there's a lot more stuff that I feel neutral about but I'm just not into. Like sports. There was an unending amount of sports subs at Reddit for each team of every discipline and after a couple of years of browsing /r/all I realized I saved more time if I just hover+clicked them once to filter them instead of reading the title every time.
I feel like clearing up my /r/all from many big subs I wasn't into allowed me to find a lot of interesting, smaller communities.
I can see that's the difference. I never went to /r/all. I picked things I was interested in and if they were good subs I joined them. To each thier own I guess.