Right...yet here I am on Fedi with my own domain and username just fine...🙄. Npubs are a solution that's looking for a problem to fix.
Discussion
Your domain and fedi name is finite, could disappear tomorrow
Nostr is forever. You can always connect to a different realy with same credentials
It could if I stop paying for it. However, that won't happen and forever is only "as long as someone cares about it" and nobody seems to give a single fuck about Nostr unfortunately. 1% user retention....😬