People are already entering universities with much of their political socialization. Universities really exacerbate and incubate the liberal hive, but I'm not sure I'd put indoctrination by the professors that high on the list.
Each generation has their University-age causes. Boomers had the sexual revolution and second wave feminism. GenX'rs saw an acceleration of the Rainbow Revolution, Digital Revolution, Third Wave Feminism. Millennials doubled down on a lot of GenX movements, Fourth Wave Feminism, among others. And during each generation, there was an anxiety and pushback conservative contingency.