Sounds like a typical stupid CO saying some typically stupid rogue thing. There is no shortage of that in the org! There was a fairly recent post here (can't find it now) relating how some CO who was the pioneer school instructor disagreed with the org on fallopian/ectopic abortions. The experience is related here:
https://www.theworldnewsmedia.org/topic/57532-ectopic-pregnancy/
As for any "subtle comments in the study articles about marriage and how a spouse's
priority should be their duty as a spouse and their children come later," if that is true, then might the fact that so few born-ins stay be factor here?