Yep. It's not an async vs not async thing. The way some people talk about it, you'd think the async keyword was at fault. It's all about whether a function is callable in some context.

Passing in the context as an argument or making it a global variable or returning a monad doesn't do anything to uncolor the function. What's the difference between `async function f()` and `function f(eventloop, callback)`? Only syntax.

Not to mention there's lots of colors unrelated to async, that most languages don't type at all. And if you use the wrong one, your program just doesn't work correctly at runtime. Thread-safe vs thread-unsafe. Blocking vs non-blocking. May throw/panic vs won't throw/panic. May fail/return null vs infallible.