UPDATE: I AM NOW (almost certainly) PERMANENTLY LOCKED OUT OF MY SIGNAL ACCOUNT. IF YOU HAVE ME ON SIGNAL, YOU NO LONGER DO.
I have just lost contact with nearly all of my friends.
I will ***never again*** use a messenger that cannot be logged into using nothing other than my password manager, a backup of my phone, and the ability to receive SMS.
IF AND ONLY IF there is a service that will let me create a phone number that can receive messages that fits this criterion, I will rejoin #Signal. Otherwise, forget it.