I disagree. The loudest activists too often tend to be younger people who either don't have kids, or are /r/childfree types who actively disdain the concept.

Of course, by "activists", there's a difference between the genuine voices, versus the Reddit or HN meme-slingers. The latter group seems louder due to style. While they happen to be on the right side (from my POV), they're still quite awful as people.