just because something is BS, doesn't mean it's easy. no was I can get a chiropractic license, but that doesn't mean it isn't BS.
look at all the nuances and complexities in astrology, it's still made up thing that brings comfort to some, but it isn't "easy".
however the biggest objection to economics, is that it's a self fulfilling profecy for the rich, they invest in the economical ideas they like, make them popular and into a "science" even with fake Nobel prizes. then those theories get applied because it's "science" now. only to benefit those who financed those institutions. basically Lobbying with extra steps.