So, a link to conjecture from an associate professor at the
PREEMINENT SCHOOL for studying Austrian School economics in the US... is evidence
against Austrian school economics?
Let me put it this way: there is a lot of financial incentive for Austrian School economics to appear "wrong", because Keynesian "economics" is really all about printing money and earmarking it for buddies within a given office's constituency.
Austrian School economics can't really actually be wrong. It's primarily the study of basically common sense things that can be proven a priori, such as subjective value (if you like purple more than I do, a purple bike might be worth more to you than to me... can something like that really be proven wrong?) and ideas like allowing people to spend money as a means of expressing the value of a given good or service.
The fact that there is an active movement within our government and its "education" system to apparently disprove such things is preposterous. But given the financial incentives, it's not surprising.