I remember opening my dad's closet and there were, like, 40 suits, every color of the rainbow, plaid and winter and summer. He had two jewelry boxes full of watches and lighters and cuff links. And just... he was that guy. He was probably unfulfilled in his life in many ways.
I think it's a little simplistic to explain a work through the psychology of its author. In other words, that Haneke has emotional problems, so I don't have to take his films seriously. By using this argument, the viewer retreats from the challenges of the film.
No doubt it is true that science cannot study God, but it hardly follows that God had to keep a safe distance from everything that scientists want to study.