Maybe it’s also subjective - I feel my focus drifts way quicker using dark mode than light mode, especially since I have to focus much harder with my eyes on the writing that I am looking at.

From the practical perspective of websites, there is a lot of inconsistency between sites. Some are well made with some “darker” shade, but I completely can’t stand the sites that just go all in OLED black with pure white letters - makes my head hurt hard. Light mode seems to work generally well everywhere