Looks very nice, I just watch a great YT video from the developer here https://www.youtube.com/watch?v=DYWTw19_8r4
This library makes use of modern composable components, is declarative driven and not imperative; and doesn't do immediate rendering in all cases.
It can target incredibly different backends, e.g. DOM/canvas/raylib.
All of this in modern C as a `.h` library alone.
These are great features and not just a 'youngster discovers' project.
The developer has clearly put a lot of thought into this content. Worth taking a second or two to see what’s available before criticising it.