Comment by flohofwoe

That would require a "C ABI friendly" alternative DOM API. That's hardly worth the trouble since the performance problems lurk in the actual DOM design and implementation, not in the JS shim. It would make more sense to go that way for lower level web APIs like WebGL or WebGPU.

Also if we're talking big changes like this it would actually make more sense to implement the DOM on top of the 3D APIs, and not the 3D APIs as an appendix of the DOM ;)