I agree. I also don't understand their "failure of the physical metaphor" section- just like I don't understand people who dislike the new address book and especially iCal. These are huge UI visual improvements that, sure, add a bit of whimsical flair, but what's the harm there?
Great explanation here.
http://arstechnica.com/apple/reviews/2011/07/mac-os-x-10-7.ars/5
Mainly, it's that the visual "flair" gives the impression that the interface works a certain way when it doesn't. And sticking with a literal visual interface imposes unnecessary limitations - these versions remove some functionality like the three pane view in address book.
Plus I'd argue that the extra junk like stitching and ripped pages are wasted space that could be used instead for the content.
So far seems like a great OS but the design choices in those two apps and a few other places are pretty awful.