It has nothing to do with them being theist. (people can hate homosexuality if they're atheist too)
Yes, and the Large Hadron Collider
could create a black hole that swallows Earth, but these two scenarios are extreme improbabilities. I understand you don't see the distinction between possibility and probability, but scientists tend to discount extreme improbabilities when forming analysis or offering guidance. Science regards all matters with doubt by default, and even much of Old science has been debunked by New Science. it is only the Strongly Evidenced ideas that break out of Doubt's gravity well and reach Living Theory outer space.
This is why science is cumulatively providing a more and more accurate description of the universe, and why technology has been evolving so rapidly since the dawn of modern Reason. Meanwhile religion keeps offering the same shitty old Bronze Age assumptions for 2,000 years straight.