Many of the examples given require additional training that you'd need to pay for, one way or another.
Most companies will not hire a "web developer" who doesn't have significant programming skills. These skills need to be acquired, at a cost.
"Commercial Pilot"... yup, you only need a High school Diploma. Oh, and a Commercial Pilot Certificate. Which will cost you somewhere between 9'000 and 25'000, according to google.
Also, it seems you'd have to be extremely lucky to actually make 60'000 a year. Entry level salaries seem to be closer to 20'000 a year (yup, below the "poverty line")
And that's the only one I looked up, out of curiosity. Sounds to me like that article is full of ...