Still insulting. There is a wide pool of educated Republicans.
Actually, the Courts rejected it without hearing evidence. The professor could state that, and he would also be allowed to discuss the anomalies of an election in which six swing states, in which one candidate was in the lead, simultaneously called a halt to the count in the wee hours of the night, only to restart again with a reversal in which the other candidate received ballots so lopsided that it was a statistical anomaly.
Also, the professor could instruct that the Jan 6 riot was not an insurrection, but an attempt to delay certification until a full review was done.
There will be plenty of Democrats to argue the other side. The difference is, there would now be Republicans presenting the opposing viewpoints.
And of course, all views from students would be discussed.