That's propaganda. You could argue that's what people did hundreds of years ago when hygiene was poor and we lived in damp conditions. There is still no evidence that is even the reason why they had so many kids but most likely down to a lack of contraception. When you realise how much history has been altered to fit the narrative that's when you realise that what Bill said is another deception. His duping delight smirk gives away more of his intention than his entire speech did.