Nostr provides censorship resistance through replication. You use multiple relays. If stuff is taken off one of those relays you are not censored, you just have 1 fewer replication points. At that point you go add another relay to your relay list.

I am not suggesting censorship, nor am I promoting it. I have no intention of sending anybody such a message. But I develop the chorus relay, and some operators will censor stuff, and I wanted to add code to make sure that when this does happen at least the person being censored finds out about it.