The average white kid does not want to spend $50K to $70K to learn about trans history from some they or them. Just not worth it. You can certainly get away with something like that at Harvard or Columbia, but at the average college if just doesnt fly and the "customers" of these colleges are just walking away. Good for them.
(On a personal note: Joan C. Williams, a professor at the University of California College of the Law, San Francisco. I was at her wedding. She married a friend of mine from H.S. She was mentioned in the article.)