I mean, similar to using react/redux to support noscript scenarios I imagine you SHOULD be able to use any SSR supportive framework to do the same, though it might require more than usual care to do so.

Exactly! As long as your framework supports SSR, and you got an event-based state container, you're good to go.

I haven't used it, but it appears that there will still be Javascript running in the browser. In "client" mode, it uses WebAssembly, which needs Javascript to accomplish anything in the DOM. In "server" mode, it still needs to communicate back and forth with the browser and merge changes into the DOM. (Looks very similar to Phoenix's Live View or Rails's Stimulus Reflex)

In as so far as I am aware disabling JS kills webassembly so WASM would be no here. Same with server side blazer (requires JS)