Earlier quoted context omitted.
You're thinking of college by looking at the average. College doesn't work like that. It never did. You'll always find a "Jim" that went to college and did fantastically well for it. Elitism works like the lottery, or the Netflix prize, or the Olympics. When the aggregate resource spent is averaged out per head, it's never worth it. But for the winners it is always worth it.
The article averages all colleges, some major have significantly higher returns, choosing engineering for example you get both high returns but also a lower tuition cost and better outcome on average than, say, law schools where prestige and connections play a major factor in lifetime earning
The trouble is that these outliers, who are able to realize artificially high incomes due to the artificial labour supply constraints, make it appear that everyone with a degree can do better than without when observed on average. But closer inspection of the data does not continue to back it up. Despite substantial increases in college attainment over the last several decades, incomes have remained stagnant.