It's become, at least in many departments of many universities, about "culturation" rather than education - about making students fit into a culture of what "liberalism" has become, which is unquestioningly holding "liberal" values. That's not education; it's something between indoctrination and a social club.
I put "liberal" in quotes, because real liberalism is much more broad-minded than what's on much of our universities. Real liberalism isn't about making your opponent shut up; instead, it's about recognizing their right to exist and to have their say.