The point is that when we only refer to God as male, we encourage the perception that men are better than women. If we are made in the image of God and God is male, then it stands to reason that men are more Godlike than women. It's still a long ways to get from there to wife-beating, so they went a bit too far. But I agree with the original sentiment.
That said, I do not think we should remove all references to God as male. The Lord's Prayer is how Jesus saw God and it is beautiful. Are we to refer to God as It?? Rather, I think we should have both masculine and feminine references to God. Let us lift up the Divine Feminine, not tear down the Divine Masculine. Let's not sink to the lowest common denominator. That is the opposite of what religion is supposed to be about.