it entirely depends on how you use relays, like almost everything about nostr, there is ways to achieve different goals with different configurations. most other protocols lock you into patterns, nostr doesn't do this.
Discussion
also, is it censorship to stop trolls and spammers from polluting people's feeds? this is something that can be more challenging. at least until most clients finally started supporting auth it was a big problem.
the main reason we aren't overrun by them here is because there isn't enough stupid people to fleece. a large percentage of nostr users are nostr developers. the attack surface is very different from conventional networks.
yes, it's censorship
your mother is a whore
what you gonna do dickwad? cry to mummy?
of course i don't mean that but maybe the fact that jerks don't come here much you forget that they exist. keeping them out of your feed is not censorship, any more than it is censorship to choose to watch CNN instead of Fox or what the fuck ever.
what makes nostr censorship resistant is that the protocol is light and multiple relays can replicate each other and anyone with minimal skills can set them up and idk anyway what you define as censorship resistance if you don't think it has something to do with also not having to read bullshit from jerks.