Personally I like that better, because then you can have evil wizards and the like organising them and providing options, instead of zombies shambling at the machine guns which somehow always works for them.
Well, I like shambling zombies. I really appreciate the creeping horror of a zombie you can truly contemplate (along with its implications) as it advances towards you. I like the dichotomy of threat between stumbling isolated walking corpse and inescapable crowd, the infuriating tragedy of underestimating them (the cocky clumsiness that one bite doesn't forgive, the overlooked zombie that takes you by surprise, the number that reached the problem threshold), and the sence of injustice when you get destroyed by something that basic, ineffectual and passive. It's a bit like realising that stupidity, funny in isolation, is absolutely devastating past a critical mass. Just like the worst of this forum is being kept as the harmless isolated fascist specimen in a test tube, but if like-minded people arrived en masse, the ban reaction should be swift before the forum gets culturally redefined (a phenomenon I've seen elsewhere). Or, in society, how the extreme-right is often seen as a harmless, impossibly stupid clownery (Trump and Hitler having both been described as ridiculous outliers with no chance in politics) before the realization that woah, there's actually enough support to put them and maintain them in power.
But I also like the fact that it's magical. Precisely because zombies function on symbolism. They get scary because they resonate with fears and uneases that are largely abstract, they make sense in the realm of concepts more than in the realm of physics. It's a "what if" concerning pure ideas. Nightmares.
And it's actually being lost to some degree when they become blurry fast frantic killers, because they lose their specific dread (death figure, relationship betrayal, crowd condition, etc) to become... Aliens, or Velociraptors, or anything that'd go fast and get bitey.
(To some degree only because it retains some aspects, such as the exponential development, and it probably echoes other abstract fears and uneases, such as the increasingly frantic agressivity of modern society.)