Analyzing the economy is a measure of how well the capitalist engine is running. Is the supply being met by demand (perpetually rising GDP)? Is everyone contributing to growth (low unemployment, growing market caps)? To focus on these points is capitalism, what the corporations want. This is necessarily paired with trickle-down economics to explain why you should give a shit about stocks you don't own going up.

You won't ever see measures of the economy focusing on people. Are the workers able to pay rent and bills and contribute to savings? Are workers going hungry? Does the minimum wage provide an acceptable minimum standard of living? Are wages keeping up with inflation? Are workers accumulating their own wealth? To focus on these points is populism, what the people want.

The economy is doing great! Corporations are posting record profits every quarter. But workers are getting fucked harder every year. People are mad because their life isn't easy and they can't afford a stable existence. When lots of people are unhappy, they want drastic action. 20k on a 500k house and a child care credit ain't it. Deporting 20,000,000 people and "draining the swamp" is drastic. It's objectively stupid, but at least it's action and people are thirsty for anything because what we're currently doing isn't working.

If anyone wants to win the next election, all they need is a populist platform. For Dems, that's progressivism and an infatuation with unions. It's us (the people) against them (the corporations). For Rs, it's a straightforward culture war. It's us (the true patriots) against them (the social outgroups).