I agree, finding the right balance is the trick. But if ever I had to decide between a simple interface that users understand and does the job well, and an ornamental one that adds nothing to usability, I'd tend to go for the simple one each time. Not so with Apple unfortunately. Like I said, they take the minimalist approach with their hardware design, but they can't seem to make up their mind when it comes to software. We have some moves to reduce visual clutter, like removing persistent scrollbars—and yet, with the very same OS release we have this faux leather look creeping in. Look, I can live with it, but it's not the way I'd be doing it if I was designing the GUI
Yup, Apple is maddeningly inconsistent with UI conventions. I mean, they basically gave us the Aero glass mess in 10.0 with transparent UI elements everywhere. And then they moved away to brushed metal again (thankfully less tacky). Are tabs on the top or bottom? Should the tabs stretch across the entire window or just be tiny? Do we want to have the stoplight buttons on the top or sideways? They're constantly messing with this stuff.
And beyond the faux leather of Lion and iOS 5 there is the whole linen thing that they are just throwing everywhere. Is it supposed to be what is behind the screen? Then why does it pop over the screen in iOS 5 with the notification center?
I appreciate Apple being able to tinker with new ideas but perhaps they should dial it back a bit closer to the HIG of old (I'm not asking for the dogmatic adherence to the HIG but it did have some good points that Apple is just ignoring).