I assume youre referring to the "starfield" on the home page. That's just showcasing their "Rocket" webcomponents tool, which makes it vastly simpler to make WCs.

It is otherwise a very simple website, and the framework and its SDKs are much simpler, yet more powerful, than HTMX

Lol, it's ... a feature ... I think

Well I guess part of the problem is I feel like I'm looking at the website with a magnifying glass...