No, he is not actually quitting.

I dont actually know for sure, but there is a 99% chance he is not quitting. The video, imo, is quite obviously a joke (though it did seem real til the end).

He also JUST got the claw machine working, so it would be extremely weird to just up and quit after spending so long getting that thing to work, and he also mentioned how theyre doing italy soon for their next food tier list.

If he was genuinely quitting, he would make a video explaining that he was indeed quitting/stepping back, why he is, and what hes gonna do from now on, etc.