Event Twitter has a lot of trouble with editable posts, sometimes you are reading a post and it has a message saying "there is a new version", and then you click on that and it doesn't exist anymore or other shenanigans. I don't know how it's implemented internally, but I imagine it wouldn't be too different than this, except for the fact that they have a single codebase.

In Nostr it would either be unusable chaos or everybody would just resort to using the same client.