No, that's not just my criteria, but Signal's own, when they entered the market as an alternatives to WhatsApp.

If you climb in the ring with Ali, then you'd better be able to box.

And it's also the criteria of millions of other users who have not switched to Signal because of the bugs, quirks, and lack of basic features for a modern messaging app.

Just being able to send encrypted ASCII characters to someone is not enough to make a good messaging app these days.