They could have toned down the affordances and gloss without totally removing the cues. They went to far to fast IMO. The market is not techies in Silicon Valley.
I absolutely disagree. The whole reason I'm using Apple products is that their software has always been incrementally refined, never "revolutionised", like Windows 8 or Ubuntu's Unity or whatever. OS X 10.0 and OS X 10.9 look almost the same and so do iOS 1 and iOS 6. If the form factor of my Mac changes, it does not make any app on the system look ancient, and it does not negatively affect usability.
"Well, to be honest, she can always sign up for One to One if she needs to learn how to interact with iOS 7's magical new interface." - Apple employee's response in a few months.