It's also crazy to me that people are frequently arguing over what is the best security app to use for communication arguing over privacy maximalist viewpoints but not considering the old and have forgotten the major flaw we learned about from PGP: can't decrypt, please resend unencrypted. It doesn't matter how good your encryption is if no one will use it. Pareto is a bitch. (This is a crack at the Signal vs Threema or whatever app is hot this month and we discuss next month. But when usernames?)