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iOS 7 is going to be less intuitive by default because you are not used to it yet.
That can definitely be a part of it, perhaps even a large one. But there can be other aspects of it that make it less so as well.
 
Just because something is not immediately instinctive has nothing to do with it being intuitive as they are two completely different things. If you were to use this new layout for a year and then they changed things back to the old way and you were now executing the new movements as instinctive movements, would the old way be any less intuitive since it was no longer instinctive? By your examples it would have to be. The one time I tried Android, everytime I wanted to activate the screen I instinctively reached for the home button. It had a different home button so I was always just hitting the shell of the phone. It's home button was no less intuitive in usage, but instinctively it wasn't as natural for me after having been used to an iPhone for years.

As for going to the corners, the screen size was kept small to reach most of it easily with one hand, but not all corners can easily be reached so utilizing them is not the most efficient for one handedness and why layouts were chosen certain ways. I know I have little issue reaching the corners with my one hand, but I am the only one in my family that can easily do so. If instinctively reaching for the corner, their thumbs almost naturally fall onto the new done button. Sometimes ergonomics works against some of us.
 
iOS 7 is going to be less intuitive by default because you are not used to it yet.

If it's designed with how we deal with things instinctively then it can diminish the impact, and annoyances, greatly. It's Human Interface after all.
 
Consumers, especially anonymous ones on message boards just love to whine and cry. I like this ios it's a set in the right direction. Is it perfect ? Nope. But I plan to JB as soon as I can. Apple really needs to add a zephyr like swipe.
 
I really don't want to start a flame war between the ones who love iOS 6 and the one who loves iOS 7 but here are a few of my examples on why iOS 7 is less intuitive.

Regarding the calendar icon in Notification Center, it was like that in iOS 6 as well. Many apps have a different icons in Notification Center than their actual icon, and Calendar is one of them.
 
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