They get something else right, not async/await. That something can often be used for the same purpose, but it's a different tool.

How is this not a difference without a distinction?

I can drive in a nail with a hammer or a boot, but that doesn't make hammers and boots the same thing. There are many different ways to accomplish any task.

I don’t think your analogy is very good. Boots are useful besides driving nails. What is async/await useful for except concurrency?

I have no experience with Go, but boots being useful at tasks other than driving nails was pretty clearly exactly their point.

Right, so what's the thing that async/await is good at other than concurrency?

Golang is pretty interesting, given how it's architected. But you have the concept of channels added on top of async/await which you need to keep in mind.