> When you say "Each group of users can have their own servers" you aren't enhancing privacy you are standing out.
You're also hedging against mandated government backdoors.
A single organisation like signal can easily compelled to add a backdoor (or leave the territory) like the EU is trying to do. Going after thousands of servers individually is a whole different problem.
>You're also hedging against mandated government backdoors.
Let's see the law that allows compelling backdoor into Signal then. AFAIK https://en.wikipedia.org/wiki/Bernstein_v._United_States established code as speech, meaning compelling backdoor is compelled speech, which goes against the first.
https://en.wikipedia.org/wiki/Code_as_speech goes into this in more detail and mentions https://en.wikipedia.org/wiki/Apple%E2%80%93FBI_encryption_d... where the defense was used.