You linked a site that makes money on convincing people to spend money getting a CDL, not really a reliable source. Very few truckers are doing well, even your source wages aren't that great for most positions when you add in the other costs. And USA Today had a piece last week about one working unsafe hours and making as little as $.67 a week.

https://www.usatoday.com/pages/interactives/news/rigged-forc...