While I’m not opposed to this, there’s some value in not knowing whether a zombie is moving toward you or just wandering in a direction that happens to be your direction.
With a wolf you can kinda see them sniffing, their ears are perked, they’re looking around. They’re alert.
With a zombie, staggering toward you can look a lot like purely random staggering. Some zombie media portrays zombies as acting ‘alert’ and some less so. Usually as they get closer they start to snarl and whatnot, but it tends to become obvious in the game when they’re making a bee-line toward you anyway.
Anyway, I kinda like that I occasionally second-guess myself when I’m getting close to zombies, either fleeing prematurely or wasting precious moments I could be using to flee, because it’s hard to read their intentions.