Every language takes influences from others, if that's what you meant. Scala is influenced by Java, C# and Haskell, in that order. Kotlin is influenced by Scala and Java, etc.

The "superset" and "Lisp, Haskell and Javascript in the same compiler" comments are unhinged from the reality of any language I recognise.

For me and I think most other Scala devs Scala is a statically typed FP-OO language. So Haskell doesn't do it justice because Haskells insistence on purity makes it impractical for me in getting stuff done. And Java doesn't do it justice because Java is held back by its history. "Superset of" makes it sounds like a weakness and overwrought. In my experience it offers a sweat spot of the best features of static FP and OO.

So what about your mention of Lisp and Javascript? Unless you're deep in some framework you don't need to know about the support for macros and structural typing. I've ignored those two so far because I haven't needed them (yet?). And I haven't felt they were in my way.

So where you say "a superset of Haskell, Lisp, Javascript and Java" I say "the sweet spot of the best features of static FP and OO for the real world. Leveraging the JVM ecosystem".

If you think scala is a superset of those, then you either really don't know scala at all, or you have an incredibly low opinion of all the languages you listed.