In a few seconds of partly facetious, partly very serious discussion. He’s not far from the truth either!
And, yes, as Searle says, we can indeed have an epistemologically objective science of economics, even though important things in economic life are subjective in a deeper sense (e.g., expectations, subjective utility) than just being “observer-relative.”
The epistemologically objective science we need is Post Keynesian economics. Everything else is charlatanry, pseudo-science, or, at most, just a pale imitation of Post Keynesian economics.