Well, he and Julie have 2 kids, and they homeschool. Hey, it's a start :o)
Ordinarily, a person's family size wouldn't be any of my business. However, Mr. Dreher identifies himself as a "natalist," a family-first ideologue, even to the point of believing that the government should subsidize that lifestyle over others. He's also written about how difficult NFP is, which suggests that the two-child family was deliberately chosen, and some other value chosen in the place of offspring.
My very strong opinion is that the "crunchy-con" thing is simply the glorification of personal preference, a shallow ideology that elevates appearance over content.