Do you realise that JS is an object oriented language? Prototypes are a means for inheritance (i.e. reuse of code), just as classes are in more traditional languages - it does not mean JS is not OO.
My interpretation of the GP comment is that he means angular to JS is like jQuery to JS, it's effectively a DSL that you have to learn in itself. Someone once said "people don't write javascript anymore, they write jQuery". That's what I think he meant