I really like his teaching stuff and am subscribed to his videos. He has talked about coming out with a book for a while that I have been waiting for it!
Regarding this list, I think the only one I disagreed with was the “there are no jazz saxophones or classical saxophones”. While really good players can make anything work to a degree, instruments are manufactured with a specific niche in mind. That niche is usually universal and flexible, but then some instruments do tend more toward jazz or classical. A good example is the Yamaha Custom 875EX versus the 82Z.
His last point was pretty strong, “a commercial within a commercial”...that was great!