People who read these tracts need to understand that the goal is not to literally prove that God exists (all superficial appearances to the contrary), only to show that the argument can be made and is logically consistent. The same argument can be made with equal justification about Bigfoot, the Loch Ness monster, or an honest politician.

All other issues aside, the Holocaust proves that either (a) God doesn't exist, or (b) he's Spinoza's God, the one who can't be bothered about humans and their problems.