If you as a user can connect to multiple relays, then most people will do that, making the act of an admin banning a bigot on one relay pointless, because the bigot will still get through on other relays
Just like AP, the bigot can join another instance/relay, if an instance has bad moderation policy, your relay can block that instance/relay entirely.
Which means most admins won’t bother acting except in the most egregious cases, leaving it up to the users to deal with their own blocks.
Admins can block along any spectrum of severity they want, just like AP.
once they’re blocked on enough relays, they’ll just make another throw away account.
They can do this in AP too. There’s no way to solve this unless we start requiring a passport photo with every account or a payment or something. Blocking naughty instances/relays that have weak moderation is the best solution atm.
Nostr does not reduce an instance admin’s ability to block bigots or the relays that host bigots. None of that is different than AP.