https://archive.is/qQkpC
Possible link between GATE program and Mandela Effect
Here's the previous Retconned thread about it. The claim is based on a very revealing discussion on 8chan which is linked below (NSFW warning–in case you aren't familiar with chan culture, expect to see random porn and racial slurs scattered throughout the threads).
Thread I: https://archive.is/qQkpC
Thread II: https://archive.is/wced0
Thread III: https://archive.is/d0pID
Thread IV: https://archive.is/nNVa3
Thread V: https://archive.is/WWpf9