I think the problem they're printing out isn't the writing, it's the content. Coroutines and event loops are two independent concepts. And scheduling tasks coop

I think the problem they're printing out isn't the writing, it's the content. Coroutines and event loops are two independent concepts. And scheduling tasks cooperatively in userspace is another concept still. You've got three different concepts: coroutines, event loops, and cooperative multitasking; and you're saying they're the same thing.