Earlier quoted context omitted.
You're a fool if you believe handing over metadata like your personal phone number so you can be tracked is an improvement. That's not email and not a replacement for GPG, something that actually works properly. Session is a superior app for text replacement. I think you need to find new blogs that don't offer crap advice.
They resisted this change for years, but eventually gave in and fixed it. You no longer need to hand out your phone number. https://signal.org/blog/phone-number-privacy-usernames/
I believe that one big reason for that is that it was not trivial to get with the quality they wanted. I respect the fact that they "resisted" instead of just adding some bad implementation for the sake of it.