There is more to this story: Your NIP05 identifier can be taken away from you if you’re not nice to whomever provided it to you.
Read the story here: https://nitter.net/Vikingarna1990/status/1633486120192278530
Idea:
1. Claim to have been “cancelled” by a toxic ₿ maxi on Nostr.
2. Have thousands of plebs who try and connect to your npub because the all want to check if you’ve really been blocked from Nostr or not.
3. Enjoy thousands of new followers.
Credits for this idea to https://twitter.com/Vikingarna1990/status/1633486120192278530
Discussion
Relays can block you too, it isn't censorship resistant. But it's far more cencorship resistant than a with centralized authority. What a whiner.
If he want free speech he can go to gab but I doubt he would like it when he finds out it's hard to farm cloud there as a commie.
You can always use your own domain for a nip-05 identification. Actually it’s the preferred way and makes much more sense to me.
Btw: I would block racists from my own relay as well.