It's a compromise, not a feature in itself. I get more screen for the compromise of having a small portion of it be blacked out. If you hate it so much, cover the entire menu bar with black tape and change the resolution and pretend like that's how it came if you want less screen space for no reason.

In the kindest way possible, consider that you may have OCD or similar. Like others have said, we haven't noticed or thought about this once in years of using it all day everyday. Preferring worse function (read: less display) over form (read: no notch) is not the galaxy brain you think it is.