You don't have to believe in a global conspiracy to understand how Keynesian economists are incentivized by state governments, nor why state governments would want to incentivize Keynesians.
Please spell it out for me. I'm curious why you think so few economists have found the one true way.
Has perhaps "the market" chosen the best economic model there is, the Keynesian, and discarded the others? The market is always right, isn't it?
Because Keynes supports state intervention in matters of money, and states like to intervene in matters of money?