I think GP is referring to the obnoxious type-A personalities that dominate management where everything has to be the best (or at least be presented as such) and virtuous (hah!) competition weeds out the weak. They like to see themselves as moneymaking stablemasters cultivating fine workhorses for their shareholders.

I personally had a manager refer to me as an athlete on a big-league sports team (I was a software developer), and it was incredibly off-putting. I don't like athletes, I don't like sports or athletics, and I don't like zero-sum bullshit at work. If I didn't like the guy otherwise he would have been one of the wankers GP is referring to.