This is really cool and makes me want to learn Elixir.

Staying in one language for frontend and backend is just so appealing. To my knowledge, the other option to achieve that would be having something like Blazor WASM or Rust Yew that compiles to WebAssembly to have a client-side app a la React/Vue/Svelte.

I wonder which of these approaches will end up be more prevalent in the future. To me it seems like compiling something React-like to WASM might be more attractive, because you can stay in your backend language, but ditch the permanent websocket connection.