The iTunes Movies and TV Shows app predate the unified Apple TV app, and go all the way back to the first version of tvOS in 2015. Fast forward to today, and these apps are almost entirely redundant and serve as mere placeholders.
As system apps on Apple TV are not deletable, these husks of times past have somewhat comically stuck around on the Apple TV home screen. With the latest beta of tvOS 26, users will finally have a way to bury these apps for good.
