"God created us to complement one another (hence the name of this view). The hammer and nail, mentioned earlier, are both made of metal, but they are designed to do different jobs. Each of these tools are important, essential, and valuable, but distinct; and it’s their complementary differences that make them work best."This is simply his way of illustrating the relationship between husband and wife. I have to say that this seems pretty realistic to me. Does this image look like a "level playing field" to you?
I know this clouds the issue that anyone can treat someone else like this. Any man, Christian or not, and any woman, Christian or not, can treat another like this.
But, and this is crucial, the church only teaches men to treat women like this, not vice versa. This is what has to stop.
If I admit that this man was just looking for two metal objects that interact, then could I overlook the image he chose? I don't think so. He chose a tool and a passive object. The message is clear. Men have agency and women do not.
But in the secular world the male is a certain shape and the female has her shape, and they go together on more equal terms. I think that is how it goes with plumbing, for example.