Mapping wasn't the only casualty. Podcast playback was taken out of the iTunes app and put in its own Podcasts app --- this app had been available on the iTunes store for several months and it was almost universally reviled (people who think iPhone users are sheep should think about that for a few minutes). The thing barely works, is slow, plays podcasts in the wrong order, doesn't sync with desktop iTunes, and is generally useless.
Not sure I'm suggesting a connection or not, but it's kinda funny in a sort of way how these bad decisions started happening after Jobs died. If it continues, it'll certainly be remembered that way.