1/ In defense of #Signal. Yes, I'm a guy that just posted a roundup of distributed/mesh messengers https://changelog.complete.org/archives/10205-roundup-of-secure-messengers-with-off-the-grid-capabilities-distributed-mesh-messengers of which #Signal was obviously not part. I am really excited about the potential of those.
But to the general public, I still recommend Signal. Here's why.
@jgoerzen IMO the biggest issue with Signal currently is the lack of a client for mobile Linux. There has been discussion of how to solve that on the Purism forum: https://forums.puri.sm/t/signal-silence-on-gnu-linux-a-comprehensive-summary-librem-5-app/5002