You are right, though, that the Lisp community read the essay and internalized that all other languages are Blub. In my opinion this led them to collectively dismiss, for far too long, Dictionary Literals in every dynamic language which has eaten Lisp's lunch in the marketplace in the last two decades. Objections were raised ("you need homoiconicity for macros!") and everyone assumed they were valid and stuck with Common Lisp's woeful hash table interface and the loop macro keywords, insisting all the while "oh, that's a DSL, you could implement that with Macros"[0].
And then Clojure implemented Map literals and - what do you know - Clojure still has Lisp Macros!
[0] Efforts in this direction thankfully forthcoming: https://github.com/inaimathi/clj
