Am I the only one who finds screens with rounded corners and notches really stupid? We had to struggle for decades with CRTs and their funky geometry, and when we finally get displays with perfect geometry, we botch them again to make them look... cooler?
Don't think of notches as something stupid that takes away from screen area. Think of them as something that allows the overall screen area to increase, as bevels shrink. And then when the corners of the screen are so close to the corner of the laptop, and the corner of the laptop is rounded, it looks weird if the corner of the screen isn't rounded. Like a square peg in a round hole. Fortunately, it's all context-dep…
Also, it's worth noting that notches are a hardware-specific. I haven't tried any of the MBAs with notches, but the MBPs have good-enough black levels that the notch just kind of vanishes into the black background when using full-screen apps.