Meanwhile a couple of cases are in the news, over Frat Pledges, forced to drink to death as "hazing."
From memory one was GHW Bush, and GW Bush frat. Another LSU.
My fraternity had very tough hazing. But in those days people actually grew up.
These days psychologists say an 18-19 year old freshman is like a 13-15 year old from rather recently.
So you have 200 lb. males with minds of middle school, drinking.
A huge part of frat mentality is group cohesian, loyalty. It has a parallel in military training, too.