The article doesn’t discuss velocity of money. As in businesses and peoples hoarding cash or not spending because of the certainty that this isn’t going to end well. The only ‘Uncertainty’ is what the end will look like. Just mho.
I’m doing my part to keep prices as low as possible.
No. The Austrian school doesn't use that term. The Austrians do consider important the effects of the demand to hold money which is implicit in the article's statements.
Wherever the new money flows, it may increase demand in the short run
If the Fed is unsuccessful in spurring demand, that is because the demand for money has increased.