This short introduces a prettier-looking design for Olive Oyl, which has phased out the original Segar design for the remainder of the Paramount/Famous Studios-produced Popeye cartoons.
Lipstick was one of the few luxuries wartime ladies could use. The rationale was that the troops needed to be reminded what (and, presumably, who) they were fighting for.
Story borrows heavily from two black-and-white Fleischer era Popeye shorts: "A Dream Walking" and "Lost and Foundry."
The title plays on the term 'mass production', a common term describing the idea for reducing costs by producing large quantities of products. The products were manufactured in large factories, and often used machines to make the parts, which were assembled by workers.
Lots of WW2 era in jokes, which cinematic audiences of the time would have understood and appreciated. And Olive Oyl's dream sequence might well have been a nod to Charlie Chaplin's classic, "Modern Times" as well.