Not "trickle down" but circularity: if you borrow money you get to bring forward consumption and the workers making your goods get paid earlier as well. Enabling them and the factory to pay off their loans. Ford uniquely went in the other direction of trying to push money round the economy by raising wages; that would be great but isn't happening at the moment.

Getting credit solves cashflow problems. If you're spending $10/week at the laundry, buying a $250 washing machine pays for itself very quickly. Except you can't save $250 because you keep needing to do laundry.