I think it correlates with the "blue light" studies that were released lately. As far as I know they weren't conclusive, but both Microsoft and Apple implemente

I think it correlates with the "blue light" studies that were released lately. As far as I know they weren't conclusive, but both Microsoft and Apple implemented Flux-like screen dimming, dark mode seems like a logical step. Personally I prefer light themes, I just turn the lights on so that I don't sit in the dark.