Interesting article. Thanks for posting the link.
Just a slightly more complex discussion of the issue than has been present here recently...
The design of the iPhone software was entirely informed by the fact that this was a new experience, it was nothing like using an existing smartphone, nor anything like using a Mac or Windows PC. It needed training wheels, to get people up to speed. Thus, to name one small example, why iOS buttons have tended to look so very button-y. To inform the user, as clearly as possible, that this is a button that can be tapped.
Look around you. Any street corner. Any office. Any shopping mall. Any restaurant. You will see people tapping on touchscreens. We all get it now. iOS-style computing is no longer novel; it is now the standard interaction model for personal computing.
The primary problem Apple faced with the iPhone in 2007 was building familiarity with a new way of using computers. That problem has now been solved. It is time to solve new problems.
The training wheels can now come off. Thats what I think Apples going to do tomorrow