Earlier quoted context omitted.
Do we really know which crazy billionaire is the lesser of two evils? We can merely choose between which is the seemingly better known evil. Self hosting is a way to go. It would be nice if one of those "no code" shops could make it a bit easier or something.
FWIW, Proton has no billionnaires, crazy or otherwise. They are governed by a non-profit foundation, though: https://proton.me/blog/proton-non-profit-foundation I do agree that self-hosting is best, but particularly for email, that's not trivial.
If so, have a no code site set up a mail host. It might still not be trivial but it might be much easier?