From my perspective as a seriously religious non-Christian in the United States, I can say that the proportion of people I interact with (outside of my own religious group) who are meaningfully religious is vanishingly small. Consequently my default assumption until proven otherwise is that anyone who claims to be religious, particularly in a political context, is simply doing so for cultural or political reasons and in fact lacks any sort of real religious belief that I would find worthy of respect.
Yeah, the thing about the modern phenomenon of religious conservatism is that it's not actually about sincere faith-based moral stances on public policy, but it's all about identity politics for a certain brand of White Americans. There is very little actual religious content to it, and it's obvious if you look at the detail of their rhetoric that they engage in ridiculous mental gymnastics to twist Christian doctrine into the narrow box of post-Reagan conservative orthodoxy. Which is what makes Dule's obsession with debunking it with Facts&Logic(TM) so misguided: that was never the point to begin with.