Phew, I was beginning to think the skeuomorphism would get worse and worse and worse. I don't think the idea is to get rid of it completely, but just like a little bit of mustard on a burger can taste good, it doesn't follow that eating a bowl of mustard must therefore taste even better.
The idea is to get rid of it when it impedes the efficiency of the interface in any way. One of the worse examples I've ever seen, which happens not to be one Apple ever implemented as far as I know, was the idea that if you have a circular knob onscreen that controls a parameter, you have to follow the contour of the circle with the mouse just like a real round knob. The better way is to just have "mouse as slider", which is to just drag the mouse up/down to increment/decrement the parameter. It's just plain difficult to draw a circle with a mouse, compared to just moving it up/down. But the skeuomorphist purists loved it because it was more like reality, irrespective of it being harder to do.