I think you may be on to something there zomberry. How did the photographer chose his subjects? He must have had some sort of narrative in mind, right? That said, the more I looked at the images the more I really wished I had photographs of my bedroom as a kid. I can remember aspects but I'd love to see photos like this. Your bedroom is your whole world when you're a kid.
I think I am just very sensitive to how America portrays other countries since I'm a foreigner. I don't know if the photographer is being biased, maybe just the article. I think there are more images in the original documentary. I totally don't remember what my bedroom look like when I was kid. I think I moved so much and had so many bedrooms, I only remember moving as a kid.
As an American, I think the photos of the American kids' rooms and the stories about their lives are just as horrible. On the one hand you have the rich, overacheiving kids - the one with all the trophies on display reminds me of Violet Blue from Willy Wonka - and the kid who spends his free time studying his finances on the bank website contrasted by the red-kneck kid with the shot gun and the little girl who is living in poverty. Not one of these kids are what I would think of as having a "normal" childhood.
My wife moved a lot as a kid too and it has definitely impacted her as an adult. It's something I'm very aware of now, I would like my kids to have a place they grew up with life long friends if possible. I provided a link to the original place I saw this work and without the a accompanying text, it's seemingly less biased. I think bias and ethnocentrism are qualities that don't belong solely to the US but I can understand your sensitivity.