As I have mention in another comment

> If learn what is a package/module in python, try to apply that in Go without any brain power, you will complain that Go is bad. If you are using any technology, you should have some knowledge about that technology.

Don’t really think the analogy holds up, middleware is an established term in web frameworks, the same space next is operating in and the thing looks a lot like a middleware but violates some of the core assumptions people make about what a middleware is. It is not really surprising it is a point of confusion.