You are absolutely right. People on here love to crap on good solutions in search for the perfect solution, whether or not that actually solves users' problems.

You are absolutely right. People on here love to crap on good solutions in search for the perfect solution, whether or not that actually solves users' problems. Case in point: your comment being greyed out. WhatsApp adopting Signal protocol probably accomplished several orders of magnitude more than anything else the Signal team has done. Of course Signal remains better for privacy, and yes, there are other messengers that don't require you to use a phone number. But for most people, using phone numbers solves so many more problems than it causes. Use the most secure messenger that works for you.