Economics is propaganda. It’s not an empiracle science, and it’s claims are mostly used to promote ideologies consistent with government policy or the ideology of powerful individuals with the surplus’s wealth available to pay someone to build a quantitative defense of said ideology. What else would you call it?
It's a social science? Economics is much broader and much less unified than you purport it to be. The (social) science of (in this case) Macroeconomics is just that, an observational science, a bunch of theories and observations (controlled experiments are not really feasible). The propaganda is caused by politicians, administrators, and policymakers, not really the scientists. There I agree with you, central bankers are a prime example of such propaganda. Ever wondered why almost everywhere the inflation target is 2%? Not 1%, not 3%, but exactly 2%? There is no real scientific reason behind it, that is just policy, or propaganda if you want to name it like that.
Social scientist carry out experiments / causal analysis on granular data. Macro economics (not micro) I should clarify meets the definition of propaganda because its theories do not have solid backing with experimentation or data. It is primarily used by the state to manufacture consent for economic policies that implement incentive structures that benefit the most wealthy people in society. It’s not that complicated.