The issue is not the usage from a user perspective; the issue is that it creates a fork, between clients that support this and clients that don’t. A client that shows edits will show an entirely different thing than a client that doesn’t.
Keeping kind 1 simple is crucial which is also why we don’t support markdown, html, and all kinds of bells and whistles.
If you increase the cost of running a node few people will.
If you increase the cost of creating a client few people will.
Welcome to the Fediverse circa 2021…
But tools like Nostr Development Kits will raise the bar from the other side.
You can’t depend on SDKs to abstract complexity; that’s the death of protocols because then the SDK becomes a choke point and developers using the SDK become captive, downstream, to the SDK.