Warcraft; Orcs vs Humans. That is where it started. Orcs were evil and they killed humans then ate the babies. Trolls did the same thing. Since the launch of WOW and the players themselves not wanting to be evil Orcs they have changed the lore so it is no longer Orcs vs Humans but Orcs and Humans vs something else. Do you think they caved to the players instead of keeping the lore?
Are you onto something or just on something?