Earlier quoted context omitted.
Perhaps because I live in hope... The main reason WASM and whatnot might make it easier is that instead of depending on thousands of Javascript libraries the way that so many modern web apps do perhaps a more controlled environment might include a better set of standard libraries and controls. Also Javascript has evolved at a lightning pace which is remarkable but also makes any complex tooling for it tricky. 10 year…
I'm confused as to how having a common target to have _any_ language, including C, running on the web makes tooling easier rather than harder.
But yes, it wouldn't support every language that could compile to WASM and you're right that would be even harder than creating a good tool for Javascript.