I’d say it’s a religious issue for both groups. There are people on both sides of the fence who just want to use what’s comfortable (or use both situationally), and be left alone about it. Then there are those in both camps who want to convert others…
The dark mode proponents have a better reason to try to convert people: so they can actually use dark mode more. It's only been fairly recently that dark mode was even an option in most things, unless you just installed Linux and used a terminal all day long. The light mode proponents have never had this problem since the days of Windows 3.1. This isn't a case of just using what you prefer, because dark mode simply hasn't been available in most software, and still isn't (or isn't done very well) many times.
It's similar to how Linux users appeared to make it a religious issue 10-25 years ago. Linux needed mindshare to be usable, or else you wouldn't have access to the software you needed to actually use Linux daily, so of course Linux proponents needed to push it hard so they could get support and mindshare. If all the software companies had "simply" made Linux versions of everything, so that anyone could simply choose Linux over Windows/Mac, this wouldn't have been necessary.
That doesn’t seem to be the case, with the people I’m referring to. It’s one thing to want availability. It’s another to try to shove your preferences down someone else’s throat, because, you know, they’re clearly superior. And because “science” and stuff.
See comments on this article pro light mode, about people living in goblin caves or such. On the other hand, people will literally mock you for using Discord in light mode.
Ideally, everyone would have the options they wanted available to them, use them, and stfu about it and get on with life. In reality, though, people would still be fighting holy wars over it…
