Scaling to 800x600 on a 1024x768 screen looks awful. I'm not sure that scaling a 2880x1800 screen to 1920x1080 is going be distinguishable from native resolution for anyone with eyes more than 15 years old.
No, there are 2880x1800 pixels. If you want to use the full screen to show 1920x1080, you are non-native and the math doesn't even out since there aren't half pixels. Now if they had gone 3840x2160...
I have one. I really like it. It works and feels reasonably sturdy. The only thing I don't like is that the earth pin sticks out when the flaps are closed :-(