Need a clarification on APNS Feedback Service

Hi,

Does APNS Feedback Service accounts all the reasons that could cause notifications delivery failure. There can be multiple reasons for failure like

a. The user has uninstalled the application.

b. The device is switched off for a longer duration.

c. The device does not have internet connection.

The apple doc on "Feedback Service" says that

"If a provider attempts to deliver a push notification to an application, but the application no longer exists on the device, the device reports that fact to Apple Push Notification Service. This situation often happens when the user has uninstalled the application"

This seems to suggest that APNS only invalidate the devices which have uninstalled the application.

Can anyone please clarify if my assumption is correct?