You know what they say: "Always tell your joke with a straight face." I am pleasantly surprised to find that the overt social commentary is delivered in the form of a perfectly serviceable dungeon crawl. I am sympathetic to your point of view on "arcane invaders," but even if I wasn't, this would still be usable. The premise of mindless automatons going through the motions of being adventurers is an intriguing one, regardless.