Truck driving is a shit job, at least for the ones I see in Europe, waiting for the end of the weekend on rest stops. But it pays, you are right. Electricians, plumbers, welders, etc… appear to have a better deal, especially outside of large cities.
But I think that what your article shows is that the price of universities in the USA is so high that it does not repay itself. I think it is true, except for some jobs who are on very high demand. The white collar middle class is not making more money than the upper blue collar class, therefore their education investment is a financial loss.
