Not to argue, but I wouldn't really trust Elon. He did say and do a bunch of dumb things at the beginning of the pandemic. His opinion on what's good or not isn't really that reliable.

Elon Musk is dangerously wrong about the novel coronavirus"The coronavirus panic is dumb"www.theverge.com

How about Edward Snowden, then? He's recommended it for journalists that need encrypted communications.

Main reason?

I agree with much of what you said but I do think he’d know security. In his wheelhouse.

It's just a more all-around messenger app. You can use it on multiple devices, it has cloud sync so you'll never lose your messages, and it offers a bunch of other features that make messaging more practical.

Signal may prioritise security, but as a result of that it's a much more bare bones messenger that lacks some basic utility (like multi-device support and cloud sync that I mentioned earlier).

Appreciate the feedback!