Jim, I really think that he and another couple posters on you tube really THINK that they have something to add for others benefit.
I worked with a fella that had a very bad bo problem and apparently never even considered that it was offensive. Very nice fella, but a bit clueless. I took the bull by the horns and took him aside and just mentioned that we worked with a feller that stank very badly every day ... rubbing his chin, he said ... "I know who you are talking about, maybe we could just tell him". Never occured to him that he was the feller I talked about.
Think ol Duke is maybe clueless like that. Not sure he even has a clue on the stuff he don't know. Hopefully he will take a step back and discover and research things before stepping out on video and misrepresent facts that only continue to muddy the waters.