He’s got the same logic as my sister did when she was 13 and a super sheltered Christian who still fully believed the mythology.
She went to our mother to try and get me to stop watching a cartoon because it very lightly touched on the fact that women have menstrual cycles. And by that I mean “a girl started her period and had to deal with that for about five minutes” in an episode of braceface
I never once got any sort of “coming of age” talk from either parent, but by then I already knew something happened every month that cause women pain and bleeding in their stomach and pants, respectively, and no idea why. The fact that they used tampons and pads seemed logical to me, as they absorb things. Like putting a bandaid on a cut.
My tiny child mind was not broken by these things.