That is not to say that conservatives don’t believe in “universal human rights”—for example those who believe that a society can’t permit abortion because it violates the right to life. But conservatives don’t deny that they believe in a God we can’t see that makes rules for the world.
“Universal human rights” tends to reflect in practice the individualistic quasi-religious beliefs of European-descended liberals. In an international context it functions as a form of cultural supremacy by people who claim to reject such ideas. But isn’t it curious how on everything from the nature of marriage, to familial obligation, to sexual morality, to criminal justice, to when it’s okay to extinguish nascent human life, societies run by white people have figured out the correct “universal” answer while Bangladeshis, Nigerians, and apparently even Singaporeans have got it all wrong? This is a harder road to hoe for people who claim not to believe that their society is chosen by God to be a shining city on a hill.