I suppose not if they also have access. But if you controlled access, you could easily block. If they couldn't see your relay, they wouldn't see the note at all. Freedom means people are allowed to be free. Free speech means they can say what they want. I fail to see the issue.
Yeah, but privacy means the ability to reveal one's self selectively.
your notes would be private if you only sent to 'members' allowed on your relay. They could then be able to rebroadcast. You could then perhaps kick them off?
That's what that accomplishes, but it doesn't prevent someone from downloading or screenshotting, same as everywhere else.
I'm not worried about screenshots, most people understand not to do that. Rebroadcasting because they didn't realise it was a private relay that I had given them access to is more of a worry. If that can be stopped that's great. We probably need a way for people to buy virtual relays. I don't want to share pictures of my family publically, but if I could get them onto nostr I would like to in a way only they can see.