Rumor has it original translations more closely correlate “rib” to “baculum” - partially as a way to describe why other mammals have them and humans don’t (because it was removed from Adam), and also to better describe the intention of the relationship God intended for the two of them. But then as the story was translated and edited over and over again, they needed to “clean it up”
The wealthy overlords require a multitude of cheap labor to retain their wealth. That’s why they are so concerned about falling birth rates - listen to any of them talk about it, it has nothing to do with concern for the planet like any of the rest of us (less demand on resources that we are already depleting, etc), they are concerned about maintaining the current rates of production and labor if the next generations are smaller and smaller. Sure, Vance is talking about it from a “family values” perspective, because that’s a cloak he thinks his base will listen to, but listen to Musk talk about it, or any of the “pro-natalist” movement.