Cerim Treascair, and RavynousHunter:
Japanese artists and writers have often taken names and imagery from western myths while making fiction. Often it is simply used "because it sounds foreign" or "because we wanted something mystical." It is not supposed to be 100% accurate use of the source material.
Western fiction has also used myths similarly. Are "Golems" in D&D 100% honest representation of the Jewish mythology? Flesh golems, iron golems...
Other mythologies are also used in fiction commonly with varying degrees of "accuracy." Stargate used a lot of myths but made it so that the myths were based on alien races. Should someone be furious that Ra is supposed to be a god not some alien overlord?
It is just that the "go make me a sandwich" seems to assume that any reference to something should be 100% accurate AND does not understand that someone might not MEAN to make a 100% accurate representation of a myth or religion in a fictional story.
That's without even taking into account that since mythology is (was) a living subject, there is
no perfectly accurate representation of mythology. Case in point : Anubis, defender of the sun against the night, or brother-killer waging war on his nephew Orus? Depends on the story and the era of the myth. Myth and stories
change with time, and so do cultures and their components (from food to dress to rituals and whanot)