Here's a likely reason the Fed has chosen to hide its data on government deposits: the explosion of Treasury deposits at the fed “fuels … suggestions that the Fed is directly financing the government [and] foster[s] uncertainty about central bank independence.”

Rothbard recognized that money and exchange could not develop without first establishing private property. So Rothbard also recognized that it was important to develope theories of how private property might come about. 

Much of the harm is disguised by focusing on forecasts of higher aggregate income for the poor. Individuals, on the other hand, are another story.