I don't really see the point of making something so low level accessible from HTML. Or maybe I underestimate how much React made people love using declarative/reactive programming for everything ?

React and Vue integration of ThreeJS or BabylonJS seems more suitable for people wanting to simply add some 3D things to their page using DOM elements and the react/vue syntax.

But this project is still really cool ! Maybe I'm just old and it will find a great user base.