Awesome Halo Reach (not) censored (?)

We might say that this video is funny. In a way, yes, it is funny.
However, I'm disturbed by the fact that Youtube lets it be viewed by anyone, of any age.
The profanity, vulgarity and sexual imagery, plus the hellish and nightmarish gross distortions of human bodies... that's some material I surely wouldn't want my kids to see, cartoon or not.
Cartoon doesn't even begin to excuse the laxism.
Why isn't there any mature filter on that, dammit?