Great post. The university issue is a bit regional, as in more wealthy areas its silently tolerated or even slightly encouraged by locals, though derided by travelling brothers, etc. But I know the further out you go into rural or middle-class areas, the more this starts to turn.
But the point at the end is a great one. THings like pant suits and beards and social networking and R-rated movies and on and on and on are all things that are not specifically banned. But the culture of negativity has changed our very perception of these things so that we naturally avoid them.