It's quite a stretch to call Apple's UI "hyper-realistic". The core interface and main apps (safari, mail, phone, messages, camera) mostly consist of non-textured gradients. There's a hint of glass on the lockscreen and a fabric texture used at the "edges" of the UI (in the notification center and multitasking tray) and that's about it. If anything, it looks like they're aping Apple with the icon animations, text selection, abandoning their menu buttons and attention to system fonts.
i wouldnt claim that apple's UI is hyper realistic, but there are parts of its design which are intended to be realistic. sometimes good, sometime bad. a few examples:
Well, you're lumping a lot of things under the term "UI".
As a rule, Apple minimizes these kinds of things in the core interface and often moves quickly to reduce them as new features become common knowledge. For example, the "dock" in the original iPhone looked like a speaker grill - it was probably a useful convention to denote to people that had never used OSX that it was a special section at the bottom of the phone/screen. Now it's a glassy reflective surface that subtly denotes the dock area and nicely borders the screen (much more subtly than the ICS dock, IMO). The scrollbars in OSX were once colorful and rounded, but steadily and gradually became flatter, grayer, and then basically invisible. I wouldn't be surprised if the now prevalent "fabric" pattern sees a similar fate.
Apple tends to make the metaphors glaringly obvious and keep them around in a certain class of very simple apps (the compass and calculator fall under this). It's funny that Duarte mentioned wood because Apple nerds have been arguing about the wood trim in Garageband (a spinoff from the sleek, German designed Logic app) since it launched. For power users, these things are a stupid distraction, but for the %90 of the population that is boggled by the idea of using a completely new class of software, they denote that this is fun, easy-to-use software. Google, who've made plenty of great products that have gone relatively unused, could probably learn a few things here.
There's a certain logic to the anti-skeutomorph thing, but it gets weird when it leads to dismissing Apple offhandedly. Mastery of these metaphors is a good part of the reason Apple are where they are today. It's amazing how consistent these textures, gestures and animations are across three platforms (and how smoothly they reached this point) while the other platforms are having identity crises.
I should add that I'm enormously tempted to get the Galaxy Nexus, so please take this as pro-Apple, not anti-Google.