>his text is so full of "jargon speak" that it's almost as though he is speaking another language
C'mon, give him another try! He uses metaphors and similes to explain his terms. "Hamburger menu" is fairly self-evident, "Radial menu" is linked to a picture (AKA "pie menu"). Generally he does a good job of explaining the thinking behind UI elements. Unlike a buzzword-using marketing twit, he's using words to make the picture clearer, not murkier!