The truth is that our theology of sex and gender does not reflect the actual world that God has created for us.
I disagree with this from a biblical standpoint. When God made the earth, He made male and female each. Nothing else. Anything else is something that man has made up. Intersex is an extremely rare condition. The actual world that God created for us involves only male and female. Diseases and mutations came because of the fall of man. Of course, this does not mean that intersex people are not loved and that they are not made in God's image. Anyone who says otherwise is not speaking from the Bible. However, intersex is a very rare exception and it should not be used to justify other things that God did not create.