Was assuming it was a backend. I still don't understand the advantage though. It'd help to have an example.
To be fair, I love Lisp, I dont do a lot with it, though I'm mostly a fan of Racket which is the most modern one outside of maybe Clojure.
But I'm not positive the juice is worth the squeeze, and this article was unconvincing. I mean if you want macros and terse code and a bigger ecosystem, wouldn't Clojure make more sense?
(not a CL expert here)