The Keynesian theory is designed to justify the fiat system over sound money. It only handles cases to justify the ability to create or destroy fiat and adjust interest to describe how those can inluence things for the better. But it conveniently lacks to describe the same interventions can be used for the worse. Governments loved it since it gave them the resources to execute their policies by being able to take it indirectly from the people by going into debt, which is way more easy than having to take it directly from the people. With no way of preventing mistakes or abuse it is only a matter of time to make a mistake or for the wrong people to get in charge. That is the reason for #Bitcoin to be superior. It simply lacks all possibilities to abuse it. Money's main objective is to facilitate trade. All other features are only opening a way to make mistakes or for abuse, false hope for not existing but apparently easy but at most only short term solutions, and nice to haves that are mostly not well understood (Privacy 😇).