The purpose of selling war bonds was to get people to give up their excess cash during the war, for the purpose of stifling black market activity for materials that were needed for the war effort.
Growing the economy only works if you aren’t also growing the deficit with it.
Look at the last 3 years. We’ve evolved the greatest economy in world history and yet instead of taking advantage of it to chip away at our debt we spent, and spent, and spent.