My guess is they did market research and concluded that this interface was somehow the one their target demographic preferred.
If I had an app to write and learned that customers were most likely to buy it with a UI that involved waving the phone and grunting at it, I'd just shrug and build it that way.
If I had an app to write and learned that customers were most likely to buy it with a UI that involved waving the phone and grunting at it, I'd just shrug and build it that way.