@pettter Scenario: Person A and B work at the same place, A wants to communicate securely with person B to organise solidarity. B has this really neat, simple app for secure messaging that Just Works(tm).

1. A sends secret message to B about how crappy the boss is.
2. B has archiving on because it's the user-friendly default. While noone can read the message in transit, everything can be read while the phone/app is running.
3. B leaves unlocked phone on a desk at work, because B doesn't understand simple security practices.
4. Boss comes by the desk, fiddles with the phone and reads the message from A.
5. Boss fires the disloyal employee A who tries to organise the workers.

How would B know basic security measures without time and effort to learn and understand how and why such measures are needed? Something that is secure simply can't be as convenient as something insecure.