If Theistic Belief Caused Gay Sex, Would There Be More Atheists?

I’ve been reading the reactions to the pair of SCOTUS rulings on gay marriage by religious conservatives. If you agree with these authors, the SCOTUS rulings mean “the end of marriage” and a number of other doomsday predictions for this modern jurisprudence apocalypse.

This got me wondering. In light of how gay marriage (and homosexuality in general) horrifies religious conservatives, what would happen if theistic belief caused gay sex? Would there be more atheists?