>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.