The funny thing here to me is that despite being an atheist/agnostic I actually find the existence of God much more believable than the litter box story. At least there's a conceivable cause and effect there. I really struggle to relate to people who think motivations aren't key to behavior. Sure if there was something to gain from putting litter boxes in bathrooms, I could see some people believing it. But there's literally no explanation for it. It's just a vague "they're crazy" handwave happening there.