What I mean by this is literally dark mode is harder to use than not using it.
My theory is this: darkmode - diffrenciating differences between things, letters, etc - instead of seeing the letters on the white screen, you have to hunt through a sea of black to find them, and every time you do, your eyes are surrounded by black, which makes it harder for the eyes to adjust to actual read the white.
what happens to me anyway, is I'm overwhelmed visually, feel like i'm getting very angry (and i'm extremely calm, even keeled and peaceful,) and then I find the switch to normal colors and can use the thing again.