I totally disagree. My eyes ache after looking at white backgrounds too much. That's what dark styles are for. They're much more relaxing for me. I will never read a whole bunch of text if it's got a white background. It just plain hurts. In fact, I use a plugin that converts every page to a dark style. If there's a page that doesn't render well that way (rarely) and I really want to read it, I'll squint and read it quickly before I get some sweet relief by switching back to dark mode.