If there is one moralistic message which underlines every cultural object I can think of, it is that to consume wrongly is to condemn oneself to death.
Could the obscene outpouring of pleasure at slaughtering zombies signify anything else? When ideological rigor is pursued - whether through veganism, socialism, free market capitalism - is this not the ultimate thesis we see being played out?
And, underlying it, the ideological equation of consumption with death.