For me, it would be fine for the rules to say, “There will never be any evidence that the gods exist, and there will never be any evidence that the gods don’t exist. Whether or not they exist cannot be known in this game.”
Initially it was like this. It got changed because it simply did not work as intended. On the contrary, the current system reliably produces the desired effect.
I need the Protagonists, and especially the Priest (and in its own way the Knight), to have no alibi for their actions. What you do is your choice, your responsibility. The character may believe otherwise. But the Player has to know this without a doubt.
Again, the Priest's conflict is NOT about the alleged presence of a deity.
It's about conscience and the very personal meaning that religion can have for the Priest.
(and this will emerge through active play whether the Player understands this or not, if they engage with the Class moves)
I mean, WHAT IF there was no judeo-christian-islamic God? Would the whole religion be invalid? Its teachings and morality devoid of value and meaning?
The existence of God has always been a false problem. The true questions is: do you believe that the rules and doctrines you follow are good and just in and of themselves? Are they making the world a better place EVEN IF by chance there is no Heaven and Hell?
THIS is the conflict at the core of the Priest. And "knowing" that in the game world there are with certainty no deities is key to make it all work. If anything, it enhances the (very faintly simulated) experience of "having faith" in something.
If this is not some Player's cup of tea, that's certainly fine :)