People don’t understand that the way a backdoor is usually implemented is not going to be obviously saying “backdoor_here”, neither it will look like a some magic code loading a large string and unzipping it on the fly – that’s sus af. What you will see is some “play video” functionality that has a very subtle buffer overflow bug that’s also not trivially triggerable.
This already happened with WhatsApp.
It started so he could creep on girls on their campus. Nerds had hard time to socialize, so they made a digital social network to help them with the cause. Dunno if it did. But his early interviews are creepy af, lol