Now that I'm googling for more deliberate correlations, I see other people are talking about this:
https://roytriggs.medium.com/internet-use-and-birth-rates-an...
https://fortune.com/well/2025/03/28/phones-declining-birth-r...
https://www.nytimes.com/2025/05/29/opinion/dating-marriage-c...
"The phone killed babies" tracks with my intuition about this. Data correlates.
Finances aren't keeping me from having kids. The internet is. Smartphones are. Weird as that sounds. I can unpack more and expand this into a conversation.