The exiting app he's talking about in fact does not appear to do what the patent describes, which would have been apparent had he tried to actually read the patent application.
he wrote that 'one of the diagrams' was a direct copy. not the entire application. i don't think it's easy to dismiss apple taking the home screen and including it in their patent file. apple may have different functionality beyond the home screen, but they have nonetheless downright copied the home screen.
edit: updated the title, amended 'screen' to the end to clarify
Try: "Apple Uses Copy of Existing 3rd Party App Screen in Patent Application"
So what did they patent?
abstract ideas should not be patentable.
Idiotic, but pragmatic, but surely they can use some common sense...