Dr. Biden

Am I the only one who has no clue what the rancor with Jill Biden’s PhD is about?  We had a science teacher in high school whose doctorate (I’m guessing) wasn’t in medicine.  He was Dr. Katman.  Had any of us referred to him as “Mr. Katman,” we would have been instantly corrected, we would have felt foolish, and we wouldn’t make that mistake again.

Western culture has a long tradition of respecting people with doctoral degrees in this manner; is there something about this woman that makes it necessary for us to turn this custom on its head?