That's the worst reasoning I've heard in a long time. Even on an Apple website.
That's genius! Absolute genius. Yeah, let's throw away familiar designs that people know how to use, and make people learn anything again.
Older versions of iOS, while a bit heavy on the detailed graphics, were designed by people who knew human-computer interaction. It was obvious what could be clicked and what couldn't. You could tell the status of anything just by looking at it (except the AirPlay icon in iOS 5's Music app).
It could have been refined. Tweaked. Improved.
Throwing it all away and starting again was a mistake.
What is there to learn? Click on some text once and discover it is a button. Learned. Click on an icon once and discover it is a menu. Learned.
Everything is I the same place it used to be.
If you can't learn how to use iOS7 in a few hours like the other hundred million+ iPhone users, then the problem probably isn't ios7.