Yes, but all that is true for Facebook, Reddit and whatever. It’s still nice to have this feature in the “reference” implementation of Lemmy. I think.
I don’t know if this is already in the ActivityPub protocol, but it would be nice if all instances who has a copy of some content, deletes it, if it has been marked “request for deletion” by the creator or the owner of the instance where it was first posted. There will always be actors that store specifically all posts that’s been marked for delete, but I still think this is preferable.
I don’t understand what you mean. I don’t count on anything. See my other reply.