Alfred's "death" is definitely going on too long for such an important and great character. I fully blame DC editorial for taking a small thing we know King would have undone quickly (he confirmed on a podcast it was initially intended to be a fake-out) before run's end and blowing it up into this long mostly pointless thing, the death is not even much contributing to any larger story.
Whether it's Damian, Ra's, Alfred, Grayson, even Batman, etc...not a lot well-executed "deaths" in Batman comics a for good long while. Snyder's post-Endgame "healed" Bruce Wayne (meaning Batman is gone) is probably the best most recent one done, in that it was kinda clever/novel and was used effectively enough in the stories.