Sure, the US poor may have cheap giant TVs from Walmart, but they may or may not have any reliable means of becoming something other than poor, and they may or may not have much control over their own lives.
Earlier in my life I spent a little bit of time in a very poor community in inland California as a volunteer, and nothing I saw convinced me that society is working for those people, and especially their children. The expectations were low, opportunities almost nonexistent.
The message I'd like us to take away from these discussions isn't, "Let's ignore all the improvements that have been made," but rather, "Let's not stop now, there's much more to be done."