That’s where everyone gets ad data wrong. Youtube doesn’t really care if you watch an ad or not. The ad buyers do, and so Youtube keeps them happy by doing things like disallowing adblockers, but Youtube doesn’t give a shit about BolexForSoup. Your age, your sex, your location, and the last time you upgraded the Macbook you are logging onto their site with, that’s what they want to know. They want to sell your data, not you. They will add your biological and technological distinctiveness to the pile and sell the whole pile. No one will care who you are. You are the product, and Youtube just needs to make sure your ingredient label is correct.