Just to double check I went back and re-read the article. It wasn't strictly about JS. It was about the entire concept of async await. In fact if you read it he

Just to double check I went back and re-read the article. It wasn't strictly about JS. It was about the entire concept of async await. In fact if you read it he dunks on C#, Dart (the language he works on), and python. He only calls out one language as having gotten it right. Go. Go eliminated the distinction. Everyone of his points about JS/C#/Dart all tick the same boxes he calls out as problematic in Rust as well. The size of the problem may be simpler but you haven't eliminated it. Everything is composable if you wrap it appropriately. Saying that since you can convert something into a newer more composable form doesn't imply that the original is composable. It just means that since we can write code everything is composable with the right amount of work. What people actually mean when they say two things are composable is that you don't need a shim to compose them together.