Been using signal for years and love it and got the majority of my contacts on to it. My question is how are usernames useful now? You still need to register with a phone number with signal to limit spam and bots afaik and I’m assuming you should protect your username just like you do your phone number anyways because spam, malicious files/messages, etc… What scenario is this addressing where an average person gives up their username to a stranger? The only one I can think of is online dating or other online interactions like on forums. Just seems this is just more tailored to the people who need to be pseudo-anonymous for whatever reason than an actual privacy feature. Even then for the anonymous people does that mean usernames will be able to be changed?
Tldr: Questioning what scenario does signal’s new usernames address for the average Joe?
Edit: Just realized can be very useful for work relationships
If that is the threat model then Signal is not and never was fit for purpose at all.
Because every time I’ve complained about not wanting to give my phone number to sign up for Signal I’ve been lectured about how Signal is “all about privacy, not anonymity and those are not the same thing” and how that is good for the average Joe even if it isn’t useful for journalists and activists, and what you’re saying goes completely against that by suggesting that the police are somehow unable to get the phone number out of the thing that uses the phone number as the user id.
You’re describing how a real privacy-focused app like Briar functions, but definitely not how Signal does.