You can’t get parallelism with just async/await. Concurrency yes, but as soon as you want to run two async jobs at the same time you take on all the complexities of threads again (because that’s how you actually get parallelism).
Well no, not _all_ of the complexities because you have await and explicit yielding. It's much easier to pass data from one asynchronous task to another using await than it is to, say, manually code the locks or state machine necessary for the message passing and/or callbacks.
Await and explicit yielding do nothing as soon as you want to actually run multiple tasks at the same time in parallel instead of sequentially but interleaved.
