Yep. Nostr is not like a network of personal servers like Urbit. We don’t share our data p2p.
You give data to relays and it is theirs to do whatever they want with.
A hood heuristic is “if you can’t delete it, it isn’t yours”.
inb4 “nothing can be deleted off the internet!!!” If that were true, we wouldn’t need the internet archive to help keep things from disappearing.