I don't get all the fuss. Apps don't have to make changes to accommodate it because the system will do that for them, unless they want to go out of their way to use the extra (!) space.
There's zero impact on full screen apps and non-fullscreen apps get to claim the space formerly used by the menu bar.
How so? Are they going to push full screen apps up to the bottom of the notch? If not, how are you sure it won’t have any impact on so many different apps?
The menubar disappears when you’re in a full screen app, so that won’t help.
I’ve used full screen only for essentially every app daily for the past 10 years on Mac, curious to see how this works out.