Ask HN: Is WASM (WebAssembly) getting adoption in real use cases?

I keep hearing how WASM is a big thing and can potentially change the way we write and deploy codes.

I understand that one big advantage is that WASM code can be understood by browsers directly like JavaScript and it should be useful.

I am more interested in the backend use cases of WASM on how it will be useful. There are discussions around this become default run time environment like JVM or also replace docker.

I am curious are there any real use cases here and have products started using this in scale. Or this is still a prototype/idea stage. What are the tangible advantages compared to current tools