@derekmorr @evacide @eff @CNN I advocate #meditation above all. As to your question - If you are a geek, not a normie, now is a great time to look at #XMPP.
Alas, there's nothing really worth advocating to the normies of the world - I feel it's too early for them to adopt XMPP as a convenient-enough-for-their-expectations replacement.
If the normies *really* needed something *today*, I suppose they could pay an honest, reasonable price for an email address from an email service like posteo.net or purelymail (which support "autocrypt"), then use #Deltachat. Then use #linux (say, #LinuxMint for simplicity) to access this functionality, since it's not AI-patrolled like the other platforms:
https://flathub.org/apps/chat.delta.desktop