Whew, boy. There's a ton of loaded phrases in this piece . . which, well, I'll let others do the googling. Anyway. Ideologies (Evangelicals, Feminists, Transsexuals, Insert-Your-Evil-Genius-Here) don't shunt people's life decisions around willy nilly like this. Money does. People don't have kids in industrialized countries because children rapidly transform from a net investment to a net burden. Thus,
ideal industrialized states have political policy to skim improved industrial productivity into incentives for childbirth[1]. This typically doesn't happen, so kids don't happen either.
This isn't a new phenomenon; urban areas eat birthrates, and you can see it in records from as long ago as the 14th century. Industrialization turns urbanization up to 11.
[1] Or a rational immigration / naturalization policy, but that's another subject, and it's not really tenable for some cultures.