EzekielRaiden
Follower of the Way
You didn't respond to what I said.Because the real world Logic is arising after the creation of the character. Making the NPC is a creative act but also constrained by what is reasonable in the setting, like whether there is an anti-drinking God. And the. That belief is what comes into play when the PC tries to ply him with alcohol.
Applying real-world logic AFTER a nonsensical character has been created cannot protect you from nonsense. That was the whole point. Garbage in, garbage out. When the DM can declare ANYTHING to be "reasonable in the setting"--which the example belief tells me they not only can, but will do--then the jig is up before things even got started.