How can God be binary or non-binary? There's only one of him. The question of whether he's "binary" or "non-binary" isn't even coherent. He is unique.
But the uniqueness of God is not a communicable attribute; God made billions of human beings, all male or female. There is no spectrum in between and no third option. We are, indeed, binary: either one or the other, despite the false claims of a very small minority that self-identify as neither. And the very fact they call themselves "non-binary" instead of, say, a member of a hypothetical ternary sex, is a tacit admission that there are really only two possibilities.