Hmm, I agree in principle with your last sentence, but not sure how it works.
People can "edit" their posts on here, but I do wonder how that works in decentralized way since from what I understand, the ActivityPub protocol (which I think all Fediverse tech is based off (??) ) is similar to email - in the sense that I've already sent you the email with my selfie on it, and I can only request in a follow up email that you delete it.