I'm pretty sure this question split off from a discussion of APN delivery results for iOS devices.
The theory that came out of the original thread is that the explanation for the APN feedback service result fields is misleading.
Because the documentation for the APN feedback service implies that the only reason a push token would be reported on the feedback service is if the app is uninstalled. The hypothesis from the thread was that all "device contacted, token rejected" results end up being treated the same way and that the documentation wasn't updated to account for the new failure causes.
Edit: The related discussion thread: https://forums.developer.apple.com/thread/72964