Yeah these people have found their weird PR niche. There's nothing separating these people from other rich white Americans who can also comfortably provide for ~3 kids with good schooling and higher education. The real pronatalists are the scary Quiverful people who are a lot more numerous but are also religious fundies. There's no way the Collinses can compete with them because that subculture already believes around 90% of what they believe but are more effective at spreading their memes.