I think LISP, Haskell and 'Learning Lisp' or 'Learning Haskell' is nothing one should take too literal.
I think the point behind such statements is the point, that Lisp and especially Haskell today are very, very advanced languages with very, very advanced and abstract concepts (best example: Monads.). If you 'Learn Haskell', or 'Learn Lisp', the speaker will usually mean: Learn these abstract and advanced concepts. Learn to love homoiconic languages such as Lisp, Factor, and learn to love the mathematic backgrounds in haskell, with its Monads, Types, Monoids and whatsoever. If you have groked those concepts, you will usually make a serious step on the ladder of good programmers.
However, as 'Learning Lisp', or 'Learning Haskell' are just a way to say to learn these very advanced concepts, it can be very possible that one knows these concepts by heart already. So, if you know functional programming, the most interesting part about lisp reduces to macros, pretty much. (I know, I will be bashed, because there will be one or two interesting features I forgot, because I did not venture into the LISP-Land too much, because the madness of interpreters and such was too big for me, but the point still stands.)
I think the point behind such statements is the point, that Lisp and especially Haskell today are very, very advanced languages with very, very advanced and abstract concepts (best example: Monads.). If you 'Learn Haskell', or 'Learn Lisp', the speaker will usually mean: Learn these abstract and advanced concepts. Learn to love homoiconic languages such as Lisp, Factor, and learn to love the mathematic backgrounds in haskell, with its Monads, Types, Monoids and whatsoever. If you have groked those concepts, you will usually make a serious step on the ladder of good programmers.
However, as 'Learning Lisp', or 'Learning Haskell' are just a way to say to learn these very advanced concepts, it can be very possible that one knows these concepts by heart already. So, if you know functional programming, the most interesting part about lisp reduces to macros, pretty much. (I know, I will be bashed, because there will be one or two interesting features I forgot, because I did not venture into the LISP-Land too much, because the madness of interpreters and such was too big for me, but the point still stands.)