The market, once it becomes driven mainly by perception and emotion changes reality. The main reason the market goes up is because it is going up. That creates a "wealth effect". Everything that relates to equity valuation is re-evaluated higher, changing realty to correspond with the market. Of course this can go on only as long as there are net buyers, which can be for a long time. [see "Soros reflexivity."]
Regarding von Mises, he was wrong in his time. He is still wrong in his grave. The disagreement between the Austrian school and Keynes new Macroeconomics was settled a long time ago and thoroughly put to rest during the 1930's.
There can be no question that we are seeing well more than 2% inflation in some sectors of the economy. We shouldn't forget that the fed's money machine can be cranked backwards as well as forwards. Once the pandemic is under control and everyone is back to work expect a couple counterclockwise turns to be applied to the money machine crank.