Quite suprising Motorola couldn't push the navigation bar down slightly, that wastes a lot of space at the bottom. I know the article says android needs a recta

Quite suprising Motorola couldn't push the navigation bar down slightly, that wastes a lot of space at the bottom. I know the article says android needs a rectangular navigation bar, but a lot of phones with rounded corners on the display just crop the navigation bar (e.g. Oneplus). Would this have been possible with that much larger bottom curve, or are there parts of the Android UI that would be cut off? The little hint that comes up to switch to portrait/landscape mode comes to mind.