I think it'd be great if people could just have one account (per nym) and collect with people regardless of what protocol they are using.

They doesn't mean I want to hear from everyone on every protocol. There are assholes on every system I've been on, from IRC to Matrix to AP to Nostr. I don't want to hear anything from them and I don't care if they hear me. But that is independent of the question of whether bridges are desirable.