Ah! That wasn't clear to me from your wording. I think I was especially confused because that means your argument seemingly boils down to "only the first language to have a feature is notable." (And I guess also that C-like languages are hard to learn?) But all languages stand on the soldiers of giants. I don't look down on Haskell simply because other languages had its features first.
E.g,
> Automated memory management is a semantic game changer
That has been there in other languages for decades.
By "across the board," I meant across all languages not just C-like languages.