I think the (implied) accusation is that organizer basically lied, or is at least misrepresenting how much he cares. Maybe he was asked about the lack of female

I think the (implied) accusation is that organizer basically lied, or is at least misrepresenting how much he cares. Maybe he was asked about the lack of female speakers or maybe he noticed how lopsided it was once he saw them on stage. The event was certainly publicized somehow, and if you actually care about diversity it should be possible to post the announcement in a few focused groups.