What would be the equivalent extremities of the opposite camp? I'm not hearing from many opponents that sexual assault should be tolerated. It's more common to hear that they should be immediately escalated to law enforcement.
It wasn't that long ago that a literal parade of college students were chanting "No means yes! Yes means anal!"
Fortunately, that behavior isn't common. But it also isn't fair to insinuate that the other side doesn't exist.
Nor too long ago that a parade of college students were chanting "Die Cis Scum." Bizarrely (to me), detailed reporting showed that neither groups actually believed the words they were chanting - most people shouting "No means yes! Yes means anal" didn't believe rape was ok and most people shouting "Die Cis Scum" didn't believe murder was ok. Such cultural phenomenon deserve more than the surface glance you've given them.
But at least two frats were using the first one as an initiation ritual.