I didn’t read the article so I will accept your interpretation of it. I didn’t play a sport in high school. I did not do any entrepreneur/business thing. I was accepted early action. None of my friends at Stanford were into sports. Very few of them did anything of a business nature in high school.
Actually I don’t think playing a high school sport helps at all. I don’t why anyone would say that. Of course, I am not talking about nationally recruited athletes for varsity teams.