Government statistics on worker productivity combine many errors of aggregation such as "average prices" and the total purchasing power of money. So it's unlikely that productivity numbers tell us much that's useful.
There is productive consumption and there is non-productive consumption. In the Keynesian mind, it's not necessary to produce anything, so long as people spend and consume endlessly, even to the point of destroying real wealth.
It is not money that funds economic activity, but the saved pool of consumer goods. The existence of money only facilitates the flow of savings. Any attempt to replace savings with money ends in economic disaster.