I take issue with depictions of Zombies. When they were magic the question of identifying and following a target was answered, Magic. But when they made them natural the situation becomes broken. Almost all zombies I have seen have signs of decay, and that means vision is gone, smell is reduced, hearing is likely reduced or gone as all these have very tiny, sensitive structures. So the zombies can't see, hear, though maybe smell.
Further, if they can see or hear, why do they ignore each other? Take 28 days later, they are super enraged but the virus can stop them being super mad at each other? What are they using to distinguish infected from uninfected? On that not, what are they using to distinguish humans? No one ever seems to exploit their sensory weaknesses, save a rare few (Like highschool of the dead, anime).
While I could suspend my disbelief for original resident evil as they did a lot of work explain and making it realistic, since then zombies have gotten faster (infection and mobility) with less and less logic behind it, yet they always cite natural causes these days. It doesn't work, a corpse can only keep moving for so long before decay makes nerves die off. In the event of a 'controlling' parasite, while it is true they will still be able to move about for longer, humans still can't survive on raw flesh and they would still get sick and die from that. Also, parasites aren't going to instantly mark another infected as non-food so there should be a lot more zombie on zombie killing.
However, all of this leads to less hordes and easier escapes, so no go for Hollywood.