I'm not sure there is really anything to fear here. "Traditional white Christian" is a declining demographic on all three axes, and no amount of pronatalist thought will be enough to save it.

>Instead of gunning down innocent “outsiders” and “threats” to white Christian power, their means of overcoming ethno-cultural threats is instead to raise armies of culture-warriors, exchanging bullets (for now) for babies.

This doesn't sound like agenda drivel and strawman at all. People want more babies.