I can see why you have an issue with a guy getting a worthless PHd from that little school in mass (MIT). Mechanical engineering has nothing to do with science or plate tectonics (his specialty). The Air Force Academy usually scrapes the bottom of the barrel for physics professors
As a BSME and MSME from MIT who knows what it takes to get a graduate degree there, I am certain that Dr. Brown knew his stuff when he graduated. He'd have to be very well educated in thermodynamics, physics, mathematics, and more. Presumably he was the same at the AF Academy.
Re: Fanatics are not biological evolutionary scientists ...
Mechanical engineering is not a field of science
To be fair, you need a good grounding and more in many relevant areas of science (but not necessarily biology) to get an earned PhD from MIT. Brown has that degree and used to know his stuff. He either forgot it or abandoned it when he ran off the rails.