Apologies, I don’t think I can easily find the talk. I did some cursory looking based on what I could remember of the talk before posting. I like to link to things when I can.

Worse, is the topic is a current lightning rod for alt-right, so there’s a lot of garbage to sift through. I will see if I can get lucky and find the talk again.

Edit: mrosett answered this. Yes it was a lecture by Greg Lukianoff of FIRE. I might have been click-baited to watch it, but he seemed credible enough to quote, and seemed to genuinely care about actual free speech.

Quite clearly Greg Lukianoff who is with FIRE and wrote The Coddling of the American Mind