No. YouTube is by far the largest video website on the internet. No other site comes close. It's bigger than mainstream TV now. Political content of any kind only comprises of a tiny minority of YouTube content.
Make-up tutorials, washing machine and lawnmower instructions, sports, comedy, music, film, TV, unboxing iPhones, video games, cute kitties/puppies/babies and random viral rubbish will keep them on top of the hill.