How I understood your comment: "This whole field, consisting up of many people trying to do understand things, is just a bunch of nonsense generalizations."

This is a relatively fair take. That being said, at least it's damaged and dethroned the equally misguided frictionless spheres of homo economicus.

The idea that humans are not perfectly rational self-interested actors has been part of mainstream economics at least since Keynes.

Is it the whole story? Probably not. Like I said, I'm not an economist.

But given the extreme challenges in empirically testing macroeconomic models, it should be no surprise that economists might--as somewhat irrational humans--over-rely on theoretical models.