Obviously, if what I really need is security, these aren't overriding concerns! But I think part of the point is that you should be using these things even when you don't need security -- otherwise when you do use it, it's potentially suspicious. Secure messaging needs to be ordinary, not something special you only do when you need security. Signal accomplishes that well for text messaging! Nothing, apparently, really accomplishes that well for email while also being seriously secure.
Edit: Or to put it another way -- tptacek talks about people "LARPing" by using attempts-at-secure-messaging when they have no need for security. But, such "LARPing" is actually important, as it creates cover for those who do need it! Just, y'know, we still need the actually-secure part.
Obviously, if what I really need is security, these aren't overriding concerns! But I think part of the point is that you should be using these things even when you don't need security -- otherwise when you do use it, it's potentially suspicious. Secure messaging needs to be ordinary, not something special you only do when you need security. Signal accomplishes that well for text messaging! Nothing, apparently, really accomplishes that well for email while also being seriously secure.
Edit: Or to put it another way -- tptacek talks about people "LARPing" by using attempts-at-secure-messaging when they have no need for security. But, such "LARPing" is actually important, as it creates cover for those who do need it! Just, y'know, we still need the actually-secure part.