The ALL timeline is supposed to be weird / have content you don't like
I don't think instance admin should mute or block communities just because people don't like that some content shows up on their ALL timeline.
Now, there is a case to be made about muting some content, but in general the all timeline is supposed to be wild and untamed.
I agree, I prefer to block any community I don't like myself instead of having it blocked for me whether I like it or not.
I just block communities I don't care about. It takes some time but eventually it will be a marginal amount of work to get to an All feed that doesn't have a TON of stuff I don't care about.
I love that this post was literally 2 posts down from a pegging post on my ‘all’ feed.
You saw that too huh?
Further unpopular opinion; this applies to Threads as well.
I suppose it should introduce you to things you aren't already subscribed to but I'm not going to cry over instances blocking things that are widely considered undesirable on that instance. I'm happy enough blocking things I know I don't like manually for now. For others: go to e.g. https://kbin.social/d/yiffit.net, open sidebar and click the block symbol - change the domain at the end to block others.
I used to scroll /r/all all the time on Reddit. The very top was the normal stuff - memes, games, people shouting at each other about politics... a few pages lower was the interesting stuff that really got my attention. And then if I scrolled far enough I found something that made me go "that's enough reddit for today". That was a good balance.
Here, the freaky stuff jumps out waaaaay sooner, but I'm not complaining. It's getting more balanced every day, though there's quite an overabundance of memes for my liking currently.