in my mind, there's two fediverses: Canon Fedi, and The Shadow Realm
first there's the good, decent, "canonical" fediverse that broadly follows the mastodon server covenant and doesn't allow hate speech. this is a safe place to be
then there's... the rest. The Shadow Realm. whatever you wanna call it. that's the widely-defederated instances where all the bad people are. but thankfully, if you're server's even halfway decent, your admins should have the majority of these already blocked. needless to say, this is NOT a safe place to be