I think people misunderstand the point of zombie survival settings. It's not the zombies that are the threat. The zombies are just a catalyst. The real interesting part is the human interaction. In this game the bandits ARE what you need to be worried about more than zombies. The bandits ARE the main draw. People complain about the PVP, and yeah, I hate getting shot in the back of the head over a silly can of beans or a bandage like anyone else, but without that kind of interaction, the game wouldn't be nearly the same.
I don't mind it if they pump up the zombie threat a little, but honestly, despite what people may think, they're not the main actor in this story. It's not the zombies themselves it's what the zombies do to people and how they interact with each other. In no other game would I be so absolutely scared of even seeing someone that's on the same team as I am. No other game, if someone I met were blind from blood loss and passing out, would I even need to take security measures and ask them to walk a few kilometers away from they city they were in to avoid an ambush. And in no other game, would putting that kind of trust out there, and having it returned in kind, feel so rewarding.