It's not a design system. It's documentation/best practices around common UI components that you'd find in most design systems.

Oh, then I guess I don’t see the point? Actual design systems vary quite a bit, refer to their documentation for their exact flavor of how to implement UI correctly and eliminate the middleman. I’m not saying having a general knowledge of the underlying tools is bad, that’s great knowledge to have, but it does already exist if you look for it.

If I had to guess, the point is that OP enjoys learning about design systems and is trying to create a resource for other people to also learn from. Tons of knowledge already exists, but that doesn't stop people from trying to create or share new approaches to it anyway.