Ask Lemmy

I don't really know what post you are referring to, and I don't really need to, just be aware that reading All will be an exercise in blocking communities and instances as you find them.

I am not going to name or shame specific communities for you to avoid as that is unfair, and you need to make up your own mind about what you want to filter.

I will however give you some tips on how I read All:

1. Before blocking, have a quick scroll through the community to verify your first impressions, is the post you first saw representative of the community.
2. Read the sidebar, most more active communities have some sort of description in the sidebar, is the community something you are interested in, or will you just be annoyed? I have a lot of communities blocked that I in general agree with, but find the community a bit too spammy or annoying, so I find the best thing to do is to block and move on, they don't bother me, and I don't bother them.
3. Pay attention to the instance, there is no restriction on using the same name as another community on a different instance, news@lemmy.zip, news@lemmy.world and news@sh.it.just.works (if they all exists) would be completely different communities with different audiences and biases.
4. Listen to rumors, but gather more information, there are instances which has reputations of being trolls, tankies, fascists, or something else entirely, you WILL be judged based on the instance you are on, accept it and try to be excellent to others regardless, but don't take abuse, block and move on.
5. Your view of Lemmy will be different from other users, every instance has different federation status with other instances, lemmy.world for instance has far more instances defederated than lemmy.zip for example.
6. Blocking an instance does NOT block their users, you only block their communities and the threads there, not the users, they can still comment on and post threads on other instances and you can read them.
7. Lemmy is not just Lemmy, Lemmy is part of the Feddiverse, a federated network of social media services, we have Mastodon, Pixelfed, Piefed and many more, most of which can post and interact with eachother in some ways.