Correct. Looking at the Windows side of things, most of the UWP APIs are designed to be async, meaning they will never block the UI thread. The author is givin

Correct. Looking at the Windows side of things, most of the UWP APIs are designed to be async, meaning they will never block the UI thread. The author is giving the OS a unfair rep here. All three major OS has solutions to this problem. It's more up to application makers to use the tools correctly.