It mentions the high cost of housing, but I feel like that gets largely overlooked as a factor. It lists it as just one thing of many and I can't help but feel some of the other stuff is related.

Women pursuing "fulfilling" careers: One possible reason is greater financial need rather than desire for some kind of self fulfillment.

Student loans: We get told we need education to have well-paid careers.

Contraception: Cool, but you can also just not have sex as one strategy for trying to not have kids. (Granted women can get raped so it's not necessarily a perfect answer.)

For most Americans, housing is the single biggest budget item and homelessness is a horrifying scenario that is tough to escape once there. The best answer is just don't end up homeless to begin with, so I think a lot of people are doing their best to run faster to stay in place.

And children are a burden that would slow them down and have them fall off this treadmill.