Obviously ads are bad for the soul and the mind, but please don't be ridiculous, it's very easy to simply not go on YouTube (or if you can't help yourself pay the 13 bucks for premium). It's not like every other aspect of human life and actual public space hasn't been invaded by ads to a much bigger degree, where companies do ostensibly only "passively display ads on their property". Do you walk around ripping off ads from billboards or painting over ads in subway stations?