They could have, instead of the original notch, and now the island, just put a "control strip" top and bottom, that's just black pixels when not needed, and an area for contextual menus or functionality when appropriate. This way, no notch, and useful screen space when there's a purpose. It would have solved so many issues – square corners, no horns, added functionality, and still way more screen real estate than previous screens with a chin and forehead. A screen with a notch is not, no matter how you name it, a full screen device.