An honest interest, have you tried a dark mode on any device? Every time I tried it (sometimes as a new default setting after update for some JetBrains IDE), I did not like it at all for some reason as too much eye stress.

I prefer high-contrast dark mode, it seems less tiring to me, but I think it depends on the light conditions around the PC. It's usually not very bright where I work.

If it's very bright, I prefer light mode.

I use it a lot, even though it's supposed to be bad for me (astigmatism).

I am very used to it though, as I started out when computers just showed green (or amber) text on a black background. And those displays could also be tuned much better than current ones. I have an old serial terminal that I can set so low I can barely make out the text in a pitch-black room, and it can go so bright that it is readable in a sunlit room. A lot of flexibility was lost with the move to LCD (and even more with Amoled, which suffers from black smearing at low brightness, and usually really bad PWM).