[Barrin92]

The person in question has a relatively rare medical condition, for most people dark mode reduces readability as a darker screen leads to more pupil dilation which causes halation. (which you can test out yourself if you stare at dark mode text and then look at a bright surface, you'll likely literally see a halo of the text).

This is worse in people with astigmatism, which is about 35-50% of the population. Dark mode defaults, as on that website, need to die. Most of the time they're used because people use their digital devices like goblins in a cave and don't light their rooms properly, or configure their brightness settings correctly.

[justinrubek]

Surely this can't be that universal, right? I will have to do this test at some point. I have astigmatism but I find the default bright version of websites frequently painful to look at. I have no clue why but I need the dark versions.

[jabroni_salad]

My strategy has been to use light mode all around but I have f.lux set to about 20% strength all day long. I also have my monitors dimmed a fair amount unless I want to display HDR. It also helps to have a bias light behind your screens if you can.

My goal was to get rid of the 2pm eye twitch and I've mostly got it.

[Aachen]

If websites are generally too bright, you can save energy as part of increasing comfort by configuring your display to put out fewer nits (reduce its brightness setting). Usually people have the opposite problem, especially if there's direct sunlight on or near the screen, so that's probably what the factory default optimises for