I do feel like there is a flip side to that where if you're into fantasy football and drinking on weekends you're somehow less intelligent. This is evident in terms like "brogrammer" or "bro-science" I see get tossed around HN.
I doubt much of the "bro" culture stays internalized for very long after graduation. Most of it just translates to severe immaturity in the adult world. Still, there's danger in stereotype-based hatred.