As I understand it, the Almighty is not particularly concerned about collateral damage. Sometimes he strikes gays, sometimes gays and people who get transfusions and haitians, sometimes the gay-adjacent, and sometimes the entire earth because we suddenly have homosexuals on it, despite the fact that homosexuality has existed for all of recorded history, and probably before. He's just really, really, permanently pissed off about people having sex really... except of course two heterosexuals for the purpose of creating more people. But sex because of love or pleasure? That pisses him off, and he'll kill anybody and everybody to prove it.