PGP is horrible and way overly complicated but this article concludes by trading that for a long list of piecemeal solutions, some of which are cloud based and semi or fully proprietary.
PGP has hung on for a long time because it “works” and is a standard. The same can be said for Unix, which is not actually a great OS. A modern green field OS designed by experienced people with an eye to simplicity and consistency would almost certainly be better. But who’s going to use it?