That is visible in your code. I was mildly skeptical at first because it just didn't seem like it was doing much more than other design systems. Then I looked at the code.
You've built something really great here, your grasp of web components is incredibly strong, and the way you use TypeScript is very light handed in a way that made the code just a delight to read through, in a way I've not had in many years. It's been a while since I looked at a new library's codebase and learned something new, so thank you for that!
This may sound silly, but I think you've laid the foundation here for the next Bootstrap / MUI. It just needs more expandability and distribution options.
I would say that this is a joke, someone made a wobbly UI, isn't that funny. But I get a bit worried when trying to gauge much work went into this that is not required for the joke. It looks like the author actually expect people to pick up this thing and use it, and that is kind of scary.