>PGP has horrible user experience for experts. Its CLI is incredibly un-intuitive and needlessly complex and integration with mail clients is poor to non-existent.

Thunderbird[0] has pretty good (see what I did there?) PGP integration[1]. The UI is decent and there is discoverability support with various key servers as well.

But that would require folks to break their addiction to web-based email and use an actual email client. As such, I won't hold my breath.

[0] https://www.thunderbird.net/

[1] https://support.mozilla.org/en-US/kb/openpgp-thunderbird-how...