Google/youtube still won't be able to do anything because kids are smart. They'll just make accounts saying they're 22 years old. It reminds me of the times when I was like 14 and started watching pornography. To say the least, you quickly learn to just click the "yes, I am 18+ years old". That's the reality. If YT/google were to really enforce it they would make all YT/google accounts require ID submission for commenting/uploading etc.