In my mind, it's not about medical evidence for dark mode: I just prefer the experience as a user. Also even light mode is often gray on gray, with backgrounds

In my mind, it's not about medical evidence for dark mode: I just prefer the experience as a user. Also even light mode is often gray on gray, with backgrounds like #eee and text like #112 for example. The contrast is probably lower on average for dark mode, but it can still be designed well.