Are there any other places this argument could apply or is it specifically this one?
Like if I said "Yes, the university reserves the right to expel students who defecate on the teacher's desk. But we all know where this is going." that'd be pretty crazy, wouldn't it?
If universities didn't have the right to expel students at all and that was proposed, and they had a history of turning small law into totally encompassing law, I would fairly confidently say that the university is on the path to obtain the ability to expel students for any reason it seems fit.
But anyone from 10 miles away could see what's going to happen next.