I'm fairly certain nostr relay operators contacted by a government would censor notes from an npub if requested.
So Bluesky has just banned some guy exclusively on Turkey only because the Turkish government asked.

(from https://x.com/aliskorkut/status/1912191854939943362, this is the profile: https://bsky.app/profile/carekavga.bsky.social)
Discussion
Onion service relays are the answer.
Authorities can target them, but at the cost of accelerating the spread of knowledge of cybersecurity issues in consumer electronics. The authorities don't like it when that knowledge spreads. It's another one of the ways they've cornered themselves, like climate change and crude oil.
I think you right about onion realays 🧅 🤙
They definitely would, that's why the protocol is organized to be resilient to that kind of thing.
I hope so 🫡🤙

