Unless the set top box (apple or whoever) has an aerial/satellite /Cable input you still need to use the normal TV to watch standard channels, exposing you to the UI adverts.
I had considered buying an Apple TV, but my Samsung TV does everything I want just with stupid adverts, which I won't be able to get away from if I have to swap sources to Apple TV and back to live TV
This video isn't about aliens and has an interesting message.