How about you stop being a condescending **bleep**.
You know nothing of the complexity of actively managing broadband safety for tech savvy kids/teens. My daughter is an educated intelligent and well parented child who like 99% of all others is also curious beyond her years and is also only ever one dodgy YouTube recommendation away from the dark side of the web.
ONE (yes one) of the strategies I have to protect her is to ensure that she has no access to YouTube through TV or android devices on the home wi-fi, unfortunately Google doesn't make this easy and to kill it properly you need to block a lot of URL's that also impact other Google services (yes I have figured it out thanks).
I assume that you're a childless gammon who loves the daily mail, or just a troll but frankly I don't give a toss about your assumptions.