The Freddy Files is NOT reliable. In the same minigame description they say "If you turn them all green at once, you lose control of Freddy." Which just isn't true. I don't think they actually played the games they probably watched a letsplay where the player didn't move after doing that.
At this point, he probably is her. Mimic is The Puppet now, apparently, which means that there is no Charlie, which rewrites the whole fricking lore (he already did that with DittophobiMEH). Everyone is the Mimic now. It's all just the Mimic killing itself a bunch of times. There IS no Scott Cawthon, actually. It was the Mimic in disguise writing games about itself.
Why would he do that? Why would he be STOPPING child murder?