Yes sure, some kind of middle class job is worth it. But most of the article it about how to get minor gains inside that middle class job

every minimum wage job is looking for managers who make middle class incomes and then you'll have something. You end up tying yourself to the job, sometimes that means you have to move to a different part of the city or even a different city. But if you go to a different minimum wage job somewhere in your city, you'll find someone who says, yes, I need someone to be a manager.