Austrians want to make microeconomics the foundation of macroeconomics. Sonenshein, Mantel and Debreu proved, mathematically that micro is unsuitable as a foundation of macro. Two plus two would have to equal five before Austrians could be true.
Microeconomics: Savings is a good idea.
Macroeconomics: If everyone net saves, and your spending is my income, then we get the Great Depression.
One other Austrian myth: Money supplanted barter, and credit ultimately replaced money. The sequence here: barter, then money, then credit.
Archaeologists have discovered evidence of credit from ~3500 BCE, primarily marks on clay tablets for pay stubs, bar tabs and other obligations. Money (coins) arrived at ~800-600 BCE, literally millenia later. The correct sequence: credit, then money, and very, very rarely, barter.
David Graeber observes, in Debt: The First 5,000 Years, that there has never been economic money (not magical money) without a supervising authority like a temple, king, or state. Never!
States create markets like this: If the king wants to hire 1,000 soldiers, he has a logistical nightmare ahead. He has to pay, clothe, feed, train and supply the soldiers and their steeds. How does he do it? He pays them in the authorized currency--let's call it "crowns." Then he taxes the entire population in crowns. This is obviously a simple example, and real world markets are more complex, but you get the idea. The Austrian idea of markets originating with "free people" with "free exchanges" is not something supported by history.