The characters who have been living with/dealing with zombies for a full year still always show some irrational horrifying fear that disconnects them from any type of logic. A group of ~3 survivors will come across like a dozen zombies, they should be able to literally just walk towards them and head-stab them as they go until that whole herd is dead WITHOUT ISSUE (the zombies on TWD are docile as fuck and have always been depicted as easy to kill.)
Instead the 3 survivors will run away, without somehow being able to gain any ground on the zombies, and then inexplicably lock themselves in a port-a-potty because they saw a few more zombies in the direction where they were running. Zombie swarm and 'trap' them inside but they could STILL so easily just open the door slightly, face-stab a zombie, close the door, and repeat until the ~12 zombies are dead.
The show is just dumbing it down WAY too much trying to appeal to as massive of audience as they can, that it's basically become solent green of television (some bland, mass produced horse shit).