I think this article ignored the elephant in the room.
From what I've seen, a huge part of the problem is that a lot of young eligible, employed men have a hard time finding women who share their dream of children who are cared for by a full time parent, rather than a wife whose dream is of a 3 mo pregnancy-leave followed by a return to her fulltime highly rewarding career, with the motherhood role provided by a series of underpaid Guatemalans.
But young American men have no dearth of young foreign women available who share their same dreams of a nuclear family. Even in the non coastal areas of the US, you see every day white males with wives who are Latinos or Asians (especially Filipinos).
And there was a lot about "Russian & Ukranian Brides" starting in the mid 1990s. I found especially poignant the remarks made by the female friends of the groom at the end of a Denver TV station's human-interest documentary about a young Denver engineer who married a Ukranian bride. The camera person was sitting at a table at the reception with female friends of the groom, some of them ex-GF's of his. Though he made more than enough to support kids plus a fulltime mom, just like the home he grew up in and longed for, none of his female peer group shared that dream. And you heard one of them asking the others, "I'm happy for him, but why couldn't he marry one of us? What's wrong with us?"
The unspoken answer of course, was a mismatch in what they thought a family should be, ie "dad + mom + kids" versus "dad + mom + kids + full-time nanny".
I've not seen stats for this phenomenon, but I'm certain it has a significant impact on draining the pool of eligible American bachelors.
Hey, young American men. If your only choice is to have your kids brought up by a Guatemalan women, then you may as well marry a Guatemalan who shares your view of what a family looks like!
Is *that* why Schwarzenegger banged the hired help?