What if I rebroadcast this note to a relay that doesn't support expiring notes?

Reply to this note

Please Login to reply.

Discussion

Then it won't accept the note or it won't delete the note.

This is the main design flaw to Nostr: that npubs have no control over which relays read their data. The solution would be encryption, I suppose, with only "good actor" relays receiving the key for your npub.