@Paulie @cuchaz @grishka @dmitri
"they have to keep that separate thing up to date just to login to see cat pics"
They don't, they could just login to see cat pics like most users are doing.
Also I'm not sure PGP failed, it's still in use.
Off topic:
We've really got to sort out the use of the word "failed" in tech.
"Failed" implies that PGP had some kind of success target to hit that it didn't beyond just providing the ability to encrypt stuff.