I am thankful to the author for not thinking like you, as if they did perhaps there would be no WASM Studio at all as they wouldn't have the time/knowledge/perseverance to continue writing the app far enough to be accessible and perfect for everyone. Luckily, they did the really hard work of getting something that's usable to at least a few of us! And it's been really useful to me as I am trying to write a language targeting WASM.