I watched a Jordan Peterson video on Dr. Oz's official channel, and I got an ad every 3 - 4 minutes. What do you make of that evidence (given I'm not lying)? None of the comments acknowledged it.
I thought so too, but it's been so periodic and so often that I thought it couldn't be the content creator. The fact that no one complains in the comments makes me think there are other options as well, and not ones that the content creator controls.