That’s a good point. Couldn’t implementations like Damus just be shutdown though? Someone has the power to remove their app from the AppStore, or delete their Git, or their webpage. It’s not Nostr but a lot of people use Nostr exclusively through things like Damus.
Discussion
Yes the apps can be censored and if it's too popular can be a problem although it would be some forms of going around. But it's the same as in bitcoin. Bluewallet can be censored or removed from git, but bitcoin network won't stop and you still can access from other ways even if less convinient. The because it's open network someone builds new clients and they can't block all.