Maxperson
Morkus from Orkus
That's 100% false. There is nothing arbitrary with a good reason. Preserving player agency is the opposite of arbitrary.Not really, because now the NPC has mechanical elements that don't work on PCs for arbitrary reasons, while those same elements do work if they're on a PC.
And again, both PCs and NPCs have the choice of whether to believe or not, so in the fiction nothing has changed, Both the PC human and NPC human are treated as the same creature. Different mechanical representations for that choice don't make the choice disappear or treat them as different creatures.