Personally, I don't see the resignation of a diversity officer a bad thing. It is usually a

job, especially in the corporate world. I am 100% for racial equality, opportunity, etc. I worked at a Fortune 500 company and promoted more minorities into management positions than anyone else in the huge company. But it was done 100% based on merit and not due to race, etc. On the other hand, I was forced to hire some minority candidates, that were clearly less qualified than other white candidates, due to race alone . Right now, I have a family member who is being denied an opportunity for a big promotion, 100%, because he is a white male.
I have always heard the "diversity is our strength"

for the last 20+ years. I have lots of examples where it is not, in my own personal experience. It sounds good I guess, but .............................. Your mileage may vary. To me, racial preference in any form, is racism. I miss the days when you actually had to earn a trophy, based on merit.
For the record, I do not defend Jr's comment at all. It was out of line, petulant and was harmful to the university.