ikr?! i'd personally be more keen for a #logseq (at least the basic influeces from #workflowy) on nostr (data on device and/or secure sync). it's so good.
email is not worth it imo.
it was never a ...
in my rumble opnion OpenPGP has a more complex user case for instance sign a package for your linux distro .. case your key get compromised you can tell your peers by revoking the keys .. definitely a more complex PKI