I've been seeing these same articles since I was in High School and they all parrot the same points, and I could have written them in high school, because it's common sense. These authors are just rehashing the same points to sell ad space
There have been studies done that earning over 70k reallydoesn't drastically Improve the quality of ones life and as someone earning over 70k in my 20's I can see the validity of that assumption. Other than doing some extravagant shyt there's really nothing I'm hard pressed for.
It doesn't cost that much for one person to live a decent life on their own, but people fall for the bs about how they need to get married, have kids, buy a bigger house, newer cars, furniture and designer clothes and all if he sudden that 70k is gone because of debt.
If you come outnofncollege making 40k in your 20's and top out making 70k as you approach retirement, you shouldn't be hurting for money if you budget well and live within your means.