I could agree with that point for fiction; it would reflect reality especially if it is set up at a version of current time.
But fantasy fiction is very much different. The better fantasy fiction usually extrapolates fantasy cultures out of the sociological evidence accrued in human history by exploring how fantasy elements would lead to deviations instead of incessantly projecting the writer's zeitgeist on a reality with vastly different variables.
Azeroth is a world where people either could interact with their gods (trolls, pandaren) or live at a time when their religion alters radically as their god's actual reality is exposed (Kaldorei, Humans), live in a world where the afterlife is suddenly not just fully understood but readily accessible even to random civilians, a world that has been invaded by various forms of space aliens and suffered multiple catastrophes that could have been reality ending. A world were there can be no presumption of safety at any point in the last few decades (and given the monstrous populations, nor could there really be before the events of WCI outside a very few urban centers). Honestly writing fantasy fiction as if it's just fiction only with fantasy elements in it seems so lazy to me and breaks any verisimilititude.