I've read this book three or four times and it's kind of crazy he was at Apple as an executive and had no lasting impact, iOS is now full of hidden gestures/features with low discoverability/intuitiveness. Nobody there with the power to make decisions agrees with the basic premise of this book.
On the other hand, Donald Norman also came to embrace (and somewhat found) the idea of User Experience design. He pretty much admitted that his earlier focus on design was too narrow. And I'd argue that Apple very much likewise broadened their focus to the entire user experience.
