I think you’re misunderstanding how .world works. Lemmy.world doesn’t mean it’s open to everything, that’s just the instance name. They actually block and defederate from a lot of communities and instances.

If you want to see everything and judge for yourself, just pick an instance with a minimal defederation policy. That’s why I picked .zip so I can curate my feed the way I want it.

Before signing up for an instance, scroll down and read their instance policies so you understand what you’re signing up for.