I don't think "they" are worried about this as much as some think, they'll pressure the relays holders one way or another & they'll get what they want eventually.
Discussion
that's the thing, because nostr can partition we can ultimately isolate ourselves from that bullshit
but it takes a lot of extra tools, like paid relays and spam filters and all the necessary support in clients and relays to allow us to build these walls
they can have their own spammy free relays, we will move to our paid relays where spam is not tolerated and expensive to do