Geoffrey Miller is a respected evolutionary psychologist at the University of New Mexico. Miller made a mistake, but his big problem was that his mistake was very politically incorrect.
Miller tweeted: “Dear obese Ph.D. applicants: if you didn’t have the willpower to stop eating carbs, you won’t have the willpower to do a dissertation #truth.”
In my view, this tweet was clearly improper. My guess is that self control over eating may be different than the discipline to complete academic work. But in any event, it was not an appropriate thing to say to Ph.D applicants.
The question, though, is how bad of a thing this tweet was, and what sanction, if any, it required. In my view, it was appropriate for the university to ask Miller to apologize and to promise not to take obesity into account when making admission decisions. If he did not cooperate with these sanctions, then perhaps additional matters would be appropriate.