Let the government continue their game of Wack-A-Mole. Wack a Tick Tock, and 2 more will show up. But yes, the government will have a hell of a time trying to shut this down.
Discussion
Not easy at all. Clients saving posts, user npubs and relays locally, and people using their own private relays would basically mean it's impossible to censor.
I think Umbrel already comes with a simple Nostr relay.
Here it is: https://apps.umbrel.com/app/nostr-relay