Comment by bigyabai

Take it a step further, even - "End-to-End-Encryption" is complete security theater if the user doesn't control either end.

We joke and say that maybe Microsoft could engineer a safer architecture, but they can also ship an OTA update changing the code ad-hoc. If the FBI demands cooperation from Microsoft, can they really afford to say "no" to the feds? The architecture was busted from the ground-up for the sort of cryptographic expectations most people have.