I don't know about the person to whom you are replying, but in my opinion, in this case, two wrongs make a right, if you can call hosting a conference aimed at an under-represented group a "wrong". Sure, in a perfect world, we wouldn't want or need such conferences, but in this world, we should strive for the best equality we can manage and not limit ourselves by blind idealism.

If in the future, women and men are equally represented in STEM fields, then we can have a discussion about whether such conferences have outlived their purpose. But since that is not the case today, I think that trying to rectify the imbalances in a reasonable, non-confrontational way that doesn't harm anyone is laudable.