For starters, Apple is known for taking an idea that has many 3rd party solutions, incorporating it into the OS, then presenting it as their own whizz-bang idea. (See Spotlight vs Butler/QuickSilver/LaunchBar)
pyre: Apple is doing X.
Your comment doesn't really address the question, which is, "Why criticize Apple for not implementing it, then criticize them later for implementing it like you asked them to?"
It's sort of like the difference between copyright infringement and plagiarism.
Or is it more like when Roman from Party Down met that girl who was "really into Sci Fi" and she started talking about Lord of the Rings and then he berated her with the difference between Fantasy and Sci Fi?