I see your point. The trouble is, they aren't really leaning into taking care of the offspring that they have. More like passing them through the fire of Moloch.
Discussion
These are too far gone to be saved by mortal hands, many are already demons.
But even the, albeit relatively, good westerners who are having kids, they’re having 1 or maybe 2 kids maximum, and these kids probably won’t have children of their own. I’m not even sure this trend can be reversed.