There’s no obvious way to switch to normal (aka “light”) mode. Dark mode is very difficult for some people (me included) to read.
If you must default to dark mode that’s your choice but I’d love to see a light mode toggle somewhere prominent.
Yeah. You'll notice that there's a mix of light and dark. Some segments are light-on-dark, then it switches to dark-on-light. It appears to me like a "design trend" that's at odds with accessibility. https://www.apple.com does this too.
Ideally websites just respect the existing media queries so you don't even have to switch!