Earlier quoted context omitted.
Try this link: https://docs.google.com/document/d/1peUSMsvFGvqD5yKh3GprskLC... Yes he says to use a language that compiles to WASM for the UI parts to draw pixels on the screen.
Isn't this a redo of Flash and ActiveX, then?
It really seems like WASM will be the write once run everywhere runtime that was touted in the past. Java almost got us there but was too dependent on Java, whereas WASM is for any language. I've been using Flutter with their experimental web WASM support and it's very fast.