When you are a college student, you need to be open to new ideas and information if you're going to learn anything from your courses. Also, you will often be working on research assignments. Your grade on each project will depend upon your ability to do thorough, objective, critical research on your topic. If you give in to anchoring bias or confirmation bias your research will be one-sided and shallow. Or, you may unwittingly fall prey to fake news or pseudoscience.
As a college student, but more importantly, as a citizen of the world, it often prevents you from experiencing other world views.
For most people, it prevents them from learning about real world issues.
Questioning ‘Algorithms of Oppression’: Scholar at respected professional organization sets off Twitter furor by questioning new book on technology and discrimination that he later admitted he hadn't read.