When people write about "the economy", including the person who wrote this article, they generally focus on just two things:
Inflation
Unemployment.
Those are the two things mentioned in the subtitle of the article. It's no coincidence that those are also the two priorities of the Fed. And those are also the two macroeconomic indicators that are most likely to affect American personal finances. The first one relates directly to gas and grocery prices, BTW.
So there is good reason to be glad when the economy is doing great.