Also remember this is useless without complementary security measures:
- Encrypt the storage on any device where these are installed (including your desktop/laptop drives if you install e.g. the desktop version of Signal).
- Lock your devices with pin or password, and store that pin/password only in your head (there’s no such thing as telepathy at this point in time so they can’t physically force it out of you, unlike biometric data like your fingerprints).
If you are relying on “Legally they’re not allowed to…” instead of, “They simply can’t, despite all they might try,” then you’re not doing it right.
It’s owned by Microsoft now. Not like M$ is any better than Reddit. Software devs unionized? Nope. Didn’t think so.