The timing is undeniably convenient but it was definitely not done on purpose. Considering his immediate reaction afterwards to chat calling him out on it was to deny the shit out of it and call people morons for suggesting it? That's classic Phil. Remember when he got caught jacking it on camera, all he did was deny it over and over on stream, made up excuses ("I was scratching my leg, dood"), then when he realized the jig was up he tried to lean into it and start making jokes about it, since there was no way to deny it anymore. As long as he believes there's any sort of plausabile deniability he will keep lying until he has no choice but to accept it. And hey he ended up doing the same thing on his first youtube prestream, making Stationary "jokes" after all the denial of what he said earlier. His gut instinct will always be to lie, goes with the whole cult leader mentality.
It was his inner racist tendencies (*chews fingernail*) that managed to accidentally emerge at just the right time for him to provide the proper motivation to move to YouTube, but there's no way he did it on purpose. It was classic pigroach luck.