In this particular example the scene would look almost dark if the PiP would be true. if the scene would be light, then it also would look ugly but if you'd remove the diming effect for the light scene, then the controls would be barely visible so you decided to use some dark scene with the removed dimming effect (nice trick).

*There were multiple requests during long period to remove the full area dimming effect and apply it only for the controls area. If you really think that the full dimming area is cool and not an issue at all, you'd show it as it is on you promo screenshots.