I love the game “Dead Rising.” In it there’s a pivitol cutscene where some moronic old lady gets everyone killed trying to get her stupid dog. Sure they are all safe but “Grandma McPoor Life Choices” there has to get everyone killed because she’s an idiot.
This is kind of endemic to most zombie movies. Zombies of course are the big danger that always hangs over the heads of our protagonists, but it’s not really the zombies themselves who get people killed. It’s the protagonists poor decisions, flaws, and inner conflicts that inevitably lead to their deaths.
I’ve already determined that the best way to survive the inevitable zombie apocalypse is to take stock of your fellow survivors, and quitely and secretly kill the dumber members of your group. Sure some might consider this murder, I consider it premeditated self-defence.