River, I hate to say this, but your friend Sean sounds like a typical sexist man. Jeez, he's almost an archetype. That includes the inability to hear what women in that thread were saying. His own quite mistaken assertions were challenged from about every angle possible, so he digs in with a dismissive/derogatory response. *sigh*
I'm sure he has some positives since you are his friend, but I put people like that in my "not worth wasting one more word on" category.
"Love takes off masks that we fear we cannot live without and know we cannot live within."James Baldwin