[MayeulC]

> Signal's has the axis tilted all the way to the "security" end, so that the product is unusable if you aren't a technical expert already.

Wow, I really disagree with this statement.

> Could your mother figure out how to encrypt an email message using GnuPG? Absolutely not a chance. [...] Signal is GnuPG.

My parents are not technical people, yet they can use Signal. My siblings as well. I think the UX is approximately on par with WhatsApp (when I was using it).

They have done a great job when it comes to UX. Ultimately I would like to push them towards Matrix, but the UX is not here yet for most clients. Fluffychat comes close to it, unfortunately I'm experiencing issues logging in with my account (timeouts), so I can't recommend it yet.