So is WASM basically just going to be about video games? And graphics rendering?
Well, that would be great, yeah. But the other web APIs (everything except WASM, WebGL and WebGPU) still have a long way to go to provide the same functionality as native APIs that are relevant for gaming. Currently the web equivalents are a massive PITA to work with. The web platform needs something like the DirectX or Proton initiatives to make it viable for games, WASM and WebGPU alone are not enough.
I have no idea why this is getting downvoted. Floh is, among other things, the author of Sokol, which is a set of cross platform libs suitable for game dev. Sokol has "native" support for the web, which means you can write your app against Sokol and don't have to deal directly with these painful web APIs.
I've personally used Sokol for a number of projects and it has been great. You get something much leaner and meaner compared to the Emscripten port of SDL, which otherwise seems to be the "default" when people do these things.