Right now, that's probably the best way to go if you're keen to build non-trivial wasm stuff, but I don't think it's a foregone conclusion that it'll stay that

Right now, that's probably the best way to go if you're keen to build non-trivial wasm stuff, but I don't think it's a foregone conclusion that it'll stay that way. There's a Rust implementation now, for instance. And some talk of better support for garbage collected languages.