1) we don't have "negative interest rates" yet - many suggest Americans won't stand still for that. NIRP should be a call to arms, as should removal of cash. The republic of tx has proposed currency backed by gold and Bitcoin may serve as a cashless alternative (cashless is still not good) metals are currency, but tyrants have seized gold before and will again.
2) why haven't we seen hyperinflation? Some say money expansion as a percent of total supply hasn't reached a tipping point. Others say devaluation is postponed because the world reserve currency status of the dollar.
3) if money velocity is referenced, it should be quantified and compared to velocity of other periods.