Why do people say you control your own data on Nostr? You don't don't control your own data unless you run your own relay and host your own media.
How many users are actually hosting their own relay and media? Very few.
Is it possible to get censored?
It's still possible to get censored unless your run your own relay getting censored is much hard on Nostr.
Theoretically it is possible. All relays would have to agree at once to delete your content.

#Nostr