Yes, it did. As close as the war was at times, we have to wonder whether we might not have been able to win without the extensive reduction and recycling efforts.
What I know of WWII comes from my mother, living in suburbs of Los Angeles. There were many aircraft builders nearby, and the LA/Long Beach port. (now the nation's biggest port, btw)
She talked of blackouts, rubber, gas and sugar rationing. There was ample reason for caution and even fear. The japs shelled the Ellwood Oil Field, north of Santa Barbara, not long after Pearl Harbor.
At the time, it was NOT an obvious given, that we would prevail. I realize most people can't grasp the gravity of the times.
Since WWII we have not decisively won a significant conflict, that stayed won. (sure, a few little ones like Grenada. But Korea, Vietnam, Middle East, Afghanistan, Terror go on and on, perhaps because we take too much for granted, and use half measures)