[mattgreenrocks]

It ultimately amounts to a dialect. It seems confusing because it is a well-supported dialect in each language, which makes you think it is first-class.

The JVM's virtual threads approach is the right way. The runtime should be able to do everything needed to deal with async, and I, the developer, can write simple blocking-style code. Currently there are still issues around pinning when using the older concurrency APIs, but I'm hopeful they can push through them.