Sound policy takes into account the way things *are*, yes. When that conflicts with emotion (which is not always), reality is what wins under competent policy.
But the fact that people believe in god
is part of "the way things are", and so a competent policymaker has to account for this, don't they?
No. In reality, there is no god guaranteeing any right. In reality, what happens is dictated by what people choose to do, regardless of their belief framework or even whether their reasoning is coherent. That's not how things "should be", that's how things actually are. Claiming the opposite is silly.
What you seem to be saying is that a competent policymaker can say "God doesn't exist you herp-derps so I'm not taking your silly superstitions into account when I make policy that affects your hoodoo houses." And when people protest and/or riot and or vote him out of office, he says what? "I can't be held responsible for this civil unrest/election loss because I shouldn't have had to take these dumb-dumbs sensibilities, needs and beliefs into account, when I crafted the policies that determine the rules of the society they live in" ?
You keep going back to the "god doesn't exist/do anything" point. What I am telling you is that is irrelevant. Your constituents believe in god and care about their religion. You can't craft policy that they will peacefully accept if you are going to pretend that their belief in god and love for their religion doesn't matter. I get that
you think that
it shouldn't matter... but it does, so you need to account for that in crafting your policy, or you won't be meeting your constituents needs, and they will complain, protest, riot, vote for demagogues to replace you etc... which means your policy making was not sound.
I suppose I should disambiguate between competence in terms of "actually running the place" vs competence in "securing votes and gaining power". Unfortunately, these incentives don't align and politicians are much better at the latter by necessity.
You can't make policy at all if you don't hold office. The "sausage-making" saying is apropos, because in reality, policymaking does not exist in a vacuum. There must be compromises, you must keep your constituents happy and content and you must administer to their needs, regardless of how "emotional" you find them. That is the way things are. What you seem to be focused on is the way you think things should be, where the mathematically/statistically "correct" policy can be instituted by the "wise" policymaker in every instance, with no consequence to the policymaker whatsoever and no ability for the governed to resist or thwart his learned decision. A benevolent dictatorship, could work that way for instance, but I'm pretty sure that's not what you had in mind.