unfortunately I’ve asked for this long time ago n explanation given was really good, so if you were to post a note to a specific relay there’s no way around another relay grabbing that data and blasting it to other relays (essentially an aggregator) happens more often than not.

Also me a user, who is on that 1 relay you posted to can also broadcast your note to all relays im on and them to all the relays the aggregate to.. there’s already a client that does this but it’s useless rn