Earlier quoted context omitted.
Emitted light isn't a problem per se, because reflected photons aren't somehow radically different from emitted ones. Color and brightness profile is the problem. On a display, you have to have high contrast and brightness for images (that have lots of darker areas), so the system interface is in turn tuned for this high brightness—and then you have to deal with bright white under text. Note how text on e-ink is exce…
These are good points but miss an essential part of the story: reflected light almost by definition matches the brightness of the surrounding environment, meaning that the periphery is roughly the same brightness and white balance as the reading medium. If I look at my laptop on full brightness in a nearly pitch black room, it is far less comfortable to read than if I turned on a lamp. So there are two solutions to t…
Dark mode is also very often buggy, clumsy, the color schemes for syntax highlight are subjectively less pleasing, it feels gloomier, less cheerful, I see more distracting dust on the screen, smudges etc. Yeah I could also clean it more etc. The point is there can be multiple equilibra, one develops habits and preferences. It's not an absolute thing.