I think the nail in the coffin will only happen when the DOM is killed. If someone can write a rendering engine in WASM that renders to canvas (maybe even render apps with webgl), then can just create a new api for browser apps.

That’ll be the end of frontend as we know it, and everyone will have to learn this new api. The benefits are obvious, we’ll finally have a rendering engine for apps. I suppose document-based html pages can stick around, but the rest of us can move on.