An article for people commiserating about having debt? (i.e. we're all in this together...)
It's a lot more complicated than that. But it doesn't tell you what to think, which I would call a strength of the article - if it told you what conclusion it wanted from you, it would probably be dismissed by people who didn't already subscribe.
It's a slice of working Americans. As for "why"... why should it be surprizing? If this were about celebrities, nobody would be asking what it's for. It's a story about people struggling to make ends meet, most near median incomes. By Mustachian standards, these people are not trying very hard. The only luxury was a (snort) Jeep Commander and a massive home entertainment system...? But by American standards, that's a telling portrait of median-income life that was very different in decades past. So whether you sympathize or not, there is a factual change in what median income does. There is also an apparent undervaluing of people many consider community pillars. Social workers, teachers who do the hard assignments because they want their work to matter...
On the one hand, we say doctors need to be good so they need to be well paid, then we say teachers should just love their work.
The point of the article may be in part getting you to ask the point of the article. :p