That's called knowing your target demographics. I'm sure tons of kids watch him and he knows it, and not cursing probably gets more parents to not lose their sh

That's called knowing your target demographics. I'm sure tons of kids watch him and he knows it, and not cursing probably gets more parents to not lose their shit when their kids play his videos on their iPads. But Youtube also requires you to announce if the video is intended for kids and treats those videos differently for advertising to meet certain regulations (don't really remember how, I always just say mine aren't, even though I don't really curse in mine either), so that might be a factor also.