He seems very fussy about the whole thing but impressed too. My main concern is he mentions the wobbly hinge and gives it a good shake.
The one I play in my local gamestation has a wobbly hinge. It is really quite bad. The top screen is heavy. This makes it worse. Since the device has not only a gyro but an accellerometer too (for detecting changes in speed and direction) it will become very annoying using it in a game if the screen wobbles and rocks as you move..
I read the Iwata asks when it came out, they do indeed say they worked on it being strong enough not to break for 6 months... but they end saying they found the best material they could find with the design spec in mind and then finally came to terms with it late august 2010. Coming to terms with something is not fixing it. That is giving up and dealing with the fact that is all they managed. Which may not be very good.
They do not mention the hinge apart from making that strong.
The hinge looks and feels strong, I can vouch for that, but the top screen wobbles in its open position. The lock/rest position is not a tight fit so it moves out of place very easy backwards.