There are more productive ways to think about running a classroom
I'm gonna say that she meant "discussion," not "debate." Or she meant one for the other. Look, there is a lot of silencing going on in American colleges, and it comes from every side (left, right, top [admins and professors], inside [the tendency to self-censor out of fear]). Why you or anyone else would degrade this valid criticism to a single side behaving badly is beyond me.
Debates are rarely even useful as a classroom tool anyway.
Is this an attempt at reason? Or just a disguise? Because this is non-sense.
One of the great things about twitter, and admittedly there aren't many, is that you have academics carrying intimidating titles like "McCourt Chair at the McCourt School of Public Policy at Georgetown University" revealing themselves to be among the dumbest motherfuckers alive