I'll mention this article I was directed to by jsmeaton that really highlighted a lot of the reason why there is inertia behind such UX friendly integrations of PGP backed solutions:
It's the best break down I've seen of PGP and it really took me out of my flawed notion of PGP, and that it is maybe not so 'pretty good' as I had thought.
https://latacora.micro.blog/2019/07/16/the-pgp-problem.html
It's the best break down I've seen of PGP and it really took me out of my flawed notion of PGP, and that it is maybe not so 'pretty good' as I had thought.