It's not a binary thing. If you can choose secure communication vs. insecure communication you're better off choosing secure. You're right of course this doesn

It's not a binary thing. If you can choose secure communication vs. insecure communication you're better off choosing secure. You're right of course this doesn't protect you 100%, but it's a lot better than not having secure communication. Does that mean even with Signal your friend could be compelled to unlock their phone and reveal the comms? Sure. It's still better to have that be the requirement than access to all comms by default. It requires more specific and high effort targeting. It makes it harder to just query keywords generally to find people. It's the better default state.