Feminism is about "liberating" women from the duties of motherhood

More generally, from biology.

I don't know how to explain that to you in a way you will understand.

You cannot argue someone out of a position by reason when he did not arrive at the position by reason.

He has some issues. Either bad experiences with the womans, paranoid personality disorder, or maybe he got trapped in an online echochamber where he heard only horrorstories about the womans (also a leading cause of female radicalization into feminism).