I just don't want your "in between" "only hurt my eyes a little" solution. I don't see how that's so hard to understand. I set my brightness so that SDR FFFFFF is a comfortable max brightness. I don't understand why web content should be allowed to go brighter than that.
I'm suggesting something that WON'T hurt your eyes. I don't see how that's so hard to understand.
You set a comfortable max brightness for the entire screen.
Comfortable max brightness for small parts of the screen is a different brightness. Comfortable. NO eye hurting.