Also, it's only "by hand" if you, the developer, writes it. In this case:

"The frontend — lexer, parser, semantic analysis (it’s called mkf) — hands off to two of its own IRs before writing WASM-GC by hand."

So those frontend tools do the writing, not the developer?

That's not "by hand". One might say "writes WASM-GC directly". But no that also doesn't happen, it goes through an IR first?

Personally I wouldn't put too much trust in a developer that even can't get their terminology correct. Well either that or I foobar'd my understanding of the writeup?

Anyway, looks like an interesting project.