I don’t think it practically achieves this. Even now, Signal is an unreliable platform to communicate with. One can’t be sure if the message will reach in a timely manner (like a few seconds or several seconds) or even reach at all. The UX and feature set are also far behind something like Wire.

I’ll accept that Signal has a strong and reputed protocol, and has take some strong measures on security and privacy. But everything else about is truly meh, to put it mildly.

Please don’t dismiss these points about reliability saying it has never failed for you or someone you know. It routinely fails for people I know, and that’s all that matters when recommending a messenger platform to others.

Signal has made it seem like security is easy to focus on (though a lot of thought and work has gone into it), but has shown that UX or pretty hard and that running a platform is even harder (even at Signal’s scale, which I presume is a fraction of other platforms).