The fact that the author is trying to make the argument that (I'm exaggerating here) "All Americans must be poor, because the walls in YouTube videos are white" doesn't make any sense. The author even alludes to this briefly in talking about "YouTube Teens." Yes, author, younger people tend to a) rent more and b) not have as many things to hang.

As someone under 30 who moves across states every few years, I have no desire to collect a bunch of stuff to hang on my walls.