Actually, one of the names in the OT for God, is El Shaddai, the translation of which can be God, the breasty One, who sustains us as surely and completely as a nursing mother sustains her baby’s life. Not that God is female, but that He has the attributes of One who not only gives us life, but that He also sustains us. I have no idea if this is what this particular couple means, but just giving my two cents worth.
There are numerous references to God in these terms, which we usually associate with mother or female-ness. And in Genesis translations we see such binary-ness mess as: "God created man in his own image, in the image of God created he him; male and female created he them."
If we relate to God as a person, we humans relate in terms of gender and Christ taught us to relate to God as father, Abba.
This is appropriate to our human conceptions God transcends 'he/she.' What is the gender of logos?
I think those, like the article's authors, try to play a gender card on God have other agendas overlaying a mass of ignorance.
And we have the Lord God saying through the prophet Jeremiah: