The great sage Adam Carolla had a different take. Basically, you're allowed to have stupid opinions in college, sure. But the types of people who write letters supporting Hamas are also the ones who get mad when you misgender them, who will demand a recognition that the land your building is on used to belong to Native Americans before every speech, who will complain about micro aggressions if there's only dairy milk instead of soy milk in the fridge... it's an entire lifestyle that lends itself to being a huge pain in the ass for their employer. So don't bring those people into your organization.