More importantly …
The current implementation is “not friendly to other clients”. It forks threads in a way that other users (of clients that don’t support edits) are interacting with different content thread than users of the ONE client that supports it.
Given this, either ALL clients MUST implement this as a NIP (which are SUPPOSED to be optional) or #nostrisforked.
User experience trumps all, and edits as they are break UX of nostr notes.
It’s that simple.