My understanding is that libertarians believe in the rights to let private groups hold private functions.
And their big angle is that this is being held at a public university? This is akin to a group putting on a play using a public school auditorium, and another citizen suing to get a part in the play because it's being held on school grounds.
Libertarians would laugh at that case. However, since they're the perceived victim in this case, they're all for using the law to get their foot in the door.
First thing you have gotten correct. The rest of the analogy is goofy.
If you want PRIVATE debates, let the Parties involved pick up the cost. ALL of it. Otherwise, it's not private.