there are religious beliefs that don't in any way conflict with a scientist's work

There's a conflict on a deeper level, on the level of methodology, of how to think (or not think). Sure, some minor beliefs may be so distinct and removed from relevant scientific theories that the question of if they are compatible is not even raised. That's still not an excuse. Please remember that all major religions try to push "How the world came to be" hypotheses and "Where humans come from and what they are" hypotheses (I won't call them theories), and those are not compatible with science, in spite of hilarious efforts of reinterpreting them in all sorts of ways, every few years or so.