Something must have changed in the past 44 years, and I'm not being facetious.
ZBT has a very long history of Animal House-like activities all over the country. Frats are no different than law enforcement or the military. Wherever they started from, they aren’t immune from the cultural degradation promulgated by educational institutions.
There were lots of vets (including myself) in my chapter of PEK in the early 70s.