Dark mode’s bright future: How dark mode will transform Wikipedia’s accessibility
(diff.wikimedia.org)
With OLED screens, pure black backgrounds are amazing for reading in a pitch black environment.
None of it’s alleged benefits can be scientifically proven, it’s nothing but personal taste.
Not to mention, they literally scientifically proved that dark mode extends battery life with OLED screens. https://dl.acm.org/doi/10.1145/3458864.3467682