Ah, the one size fits all approach. I guess the user better find a different app if he doesn't like the default themes. Lots of light and dark themes are sloppy and poorly designed.

Some of them have too high contrast which makes me see after effects of text everywhere on the screen. Some of them have poor contrast and require users to ruin their eyes. But no, let's assume everyone on Earth is fine with a single light and a single dark theme.