If you scroll to the bottom of the article, they post their sources, including studies published in peer reviewed journals. I’m sure most of us see this headline and go, “Duh,” but here we have hard data. Every time our billionaire and political overlords wring their hands about birthrates, the collective response from all of us should be, “fuck you, pay me, or kick rocks.”
The US has little to no advanced manufacturing these days and there are birth rate issues thousands of miles away from places where it does happen.