GOP/Trump are living in the past.

[Tiberius]

But the important distinction is that the dormitory is not segregated by rule.

While I don't particularly agree with the practice, it's not as regressive as you're making it out to be.

At the same time, this is the kind of behavior that universities as institutions should be against and condemn. Like the Emory University President who didn't succumb to pressure from students to ban Trump slogans written in chalk on the campus (he instead wrote his own message about free expression in chalk).