What he mentions isn't fundamental, but half-baked, like not having bouncy scrolling or flicks or being laggy. Something can't be fundamentally broken if it can be fixed with a simple update in a few months. Other things he mentions are personal opinion (ie he doesn't like suretype very much) or are things present on the iPhone, for example:

"It can take two full seconds for the screen image to change when you turn it 90 degrees, three seconds for a program to appear, five seconds for a button-tap to register"

Take your iphone, open up contacts and count how many seconds it takes from the tap to being able to scroll or click. ~5s on mine, and I remember it being worse with OS 2.0. And what about switching orientations in ipod? At least a second unless it happens to get stuck and not rotate at all.