I used the term “fork” in a tongue in cheek way. I have been on nostr as long as you Melvin 😂

But the point stands that the user experience is equivalent to a “fork”, yes. The user experience would be split between two incompatible key management NIPs. As mentioned in this thread, it would require a kind of reset for users. But I think it’s worth it because nostr is still quite small and it’s a necessity for growth!