Funnily enough, the camera app was right there on the first home screen. He literally swiped right past it. http://www.youtube.com/watch?v=W6QbAX_E3-k&feature=playe...

You can also access the camera from the lock screen. I'm not sure that's a good example of how the interface is difficult to navigate, actually, rather than of how easy it is to fumble a demonstration.