Arguing over sci fi zombies vs magical zombies is pretty lame. Hint! The show isn't really about Zombies as much as what people would do to survive. Zombies start at the antagonist but now are sort of a backdrop to the world they live in.
Arguing the fact zombies are illogical and stupid to believe in real life means you should just watch the Grammys instead! Soak up that real life ya know?