You do skew quite young in your choice of founder, though don't you?

I didn't see anything in the article state that you guys were explicitly advising founders to do these things. One of the first things the OP says is:

"YC seems to be a cult which is quite adept at turning college students into millionaires while creating billions of dollars of wealth for Venture Capitalists."

So the outcomes he's referring to may just be a direct result of the level of prior business experience amongst people you accept into the program.