"Universities don't indoctrinate. People change because they hear ideas outside their usual bubble!"

This is surprisingly easy to test.

If True, you'll notice two things:

Observation 1: Most folks leave university with a unique worldview.

Observation 2: People leaving university will lean conservative. Most people throughout history are conservative by today's standards. Same with most countries compared to the West. And most of the West compared to the university system.

Instead, what we see are graduates with identical opinions shared by virtually no one else.

It's indoctrination.