As ssomeone that came of age in the work force at the turn of the century, this economy is extremely reminiscent, and I remember very similar articles being written at the time. I took the advice and started job hopping my way in to higher pay, and then eventually back in to the same position at my original company making 50% more.
Problem is, many companies put % caps on raises. Meaning they can only ever add say 5% to your salary. In those circumstances, I've had managers tell me they wanted me to quit and reapply so they could "start" me at a higher salary than they could give me via a pay raise.
Retiring after 40 years with a watch and a pension is a relic. And that's not necessarily a bad thing.
Instead of staying in the same job and taking whatever retirement they give you, I'd rather do what I have done.
Move around, learn a LOT more, gain far more experience, leverage all of these skills and information in to increasing higher paying positions, and invest my money as I see fit.
It can take a lot of hustle, but if you have it, not even events like 2001 or 2008 can stop you.
Ultimately, America does still afford opportunities and money for working hard AND smart.