Many of these haters have astigmatism, which makes the dark mode hard to see for them. I don't think all of the people who have this realize they have this, so, it gets directed against the dark mode itself.
You are probably going to get astigmatism or cataracts (which also make dark mode hard to read), too, if you live into your 60s.
fascinating… I have severe astigmatism and I exclusively use dark mode always, the opposite is hard for me. I did not even know that many people with astigmatism struggle with dark mode
Maybe there are other factors too, I'm not very sure. When there are thin light lines on a dark background, that's really hard to look at for me. And strangely, the same dark lines on a light background don't bother me at all.