OK thanks for the insight, regarding the 2nd paragraph. I mean, I like wide apertures - more light, faster shutter speed, narrower depth of field, more bokeh
So dilated pupils sounds all good to me
Part of what you say is true that a very stark dark mode can feel quite harsh, at least as much as light mode.
Regarding your first paragraph - by "there are arguments to be made that one shouldn’t really use screens in such conditions anyway", do you mean in a dark room etc?
I have very sensitive eyes, to any bright lights, be it sunlight or artificial. I had to return a bunch of LCD monitors recently as most modern LCD monitors are simply too bright for me even on min brightness. In my fairly dark office with no overhead lights, the monitors were kind of eye scorching. I settled on a 48 inch OLED screen which believe it or not, is much gentler on the eyes with much lower min brightness
So for me at least, a dark office with a dark screen/dark mode is much, much easier on the eyes.