Yes, but there's a careful balance to address here. As much as the npub is useful within this context, it's not familiar to people. I think that nip-05 identifiers are a really good convergent point for a number of different protocols. For example, my address can be used to look me up on nostr, but it can also be used to send me lightning via bolt12 and to send me emails.

Don't get me wrong, I know that domain names are owned by corporations. We're just not at a place to circumvent that quite yet - more people need to actually hold and identify with their private keys before we get there.