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.
What kind of threat model do you operate under where Signal Technology Foundation knowing (one of) your phone numbers is a large risk?
The fact that anyone who knows my phone number can know that I use signal does bother me.