I don't know how high up in the religion he was back in '71, but he may have suffered from a condition I began to notice as I was waking up. Men in positions of authority, usually the CO level or higher, were given great deference by the rank and file such that if a CO said this or that it was taken as truth with no need for independent verification.
The CO assigned to our congregation when I stopped going to meetings would occasionally quote bogus stats or incorrectly say that science had proven something or another. I was incredulous yet I would look around and all I'd see where nodding heads.
The fact that Herd says "scientists have proven" that women have smaller brains suggest he had fallen into that mold. Since the rank and file doesn’t ask questions he lazily resorted to making shit up. I hope he got wiser as the years passed but I wouldn't count on it.