$25b is a rounding error on a rounding error against the US economy. Further the $25b it going to be used to buy assets at par that are currently impaired but expected to go back to full value when interest rates fall. So for an investment of fractions of a penny on the dollar the Fed can preserve a large number of high growth start ups that will accrete trillions of dollars of value in the future. Seems like a good call.
