Exactly, many of the conclusions drawn sound far more 'Conspiratorial' rather than insightful. College is in no way an invention (especially considering Universities are an idea from the 11th century) to keep young, hot-blooded, and useless men at bay for a few years.
Although, from personal experience the social hierarchy is very true and is simply a result from an older-male dominated world/society. Young men and (sometimes) older women are potential competition, and young women are potential sex objects. Basic biology at play.
EDIT: But I would like to say that college is nearly useless, because the world economy is slowly collapsing in on itself (overall trend since the 70s) and sending more kids to college is no fix to that. In fact it may only make things worse (depending on how college systems work).