Is that really different from the trends of comics in decades past, such as the trend of Marvel and DC to work monsters into a vast slice of their titles in the early 1970's? (The 1970's, including the monster titles, is actually my favorite period.)

Or the Image-style of storytelling that dominated virtually every title in the early/mid 1990's.

I'm not a huge fan of the zombies, but I certainly prefer it to the Image trend of the 1990's.
The other trend that annoyed me most was all the pretentious "emo" shit that dominated in the 1990's, particularly at Vertigo.