Oh, sure. Let me just ask my geek brother to stop slaying zombie ninjas for a few hours so I can borrow the PC and catch up on my Victorian horror lit. ↗
That's what we wanted to get across in that moment, particularly when Shaun goes to the shop when he's all hung over. He doesn't notice any of the zombies around him just because he never had before, so why should he at that point? ↗
I sympathize with the zombies and am not even sure they are villains. To me they are this earth-changing thing. God or the devil changed the rules, and dead people are not staying dead. ↗