I don't use my 10+ in direct sunlight, ever.Yeah but under sunlight screen is barely visible except only when you set it to 100 % brightness and you know that.
So adaptive brightness is set ON,but anyway I need to increase the brightness outdoors maybe not 100 % but 90 % but what it makes the difference then?
I only use manual brightness control, easier on the eye, the display and the battery.
At over 1.5 years my display shows no damage with ScreenTest.
People need to keep their eyes and attention on their surroundings when out and about, not their bloody phone. Bad things happen fast.
I don't have that bad habit... you'll live better and longer.