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.”
When people say they don’t care about politics it’s mainly because they’re so utterly disenfranchised they avoid it rather than feel frustrated at their complete lack of ability to change anything, all while getting into arguments with friends and neighbors.