Some people might not want to give a phone linked to them to certain people while attempting to remain anonymous. I don't disagree this is less then the userba

Some people might not want to give a phone linked to them to certain people while attempting to remain anonymous. I don't disagree this is less then the userbase of Signal, but I assume it shouldn't be hard to use a randomly generated ID (or similar) system as a fallback options for identifiers, and leave phone numbers as the default and recommended setting.