I concur.

It's interesting that so many people who claim they understand what the software is doing don't appear to understand that proprietary software is always untrustworthy. Users have no real control over proprietary software, no matter how technical and willing they are to change their copy of the software.

Therefore it doesn't matter which apps are installed on a proprietary OS. The proprietary OS (or possibly some hardware beneath it) is untrustworthy. Every keystroke, drag/gesture, location change, camera/mic input, and more pass through proprietary software before they get to the ostensibly trustworthy app.