I don't doubt that learning lisp makes you better. But the argument is about if Lisp is the next big thing. My argument is that it is not because people have to learn new things, and they don't want to. They will only want to if there are concrete advantages to it (make a website in 3 hours), and not because of a more abstract result like 'expand your intuition'.

Lisp is likely more powerful, but it is unlikely to become very popular in the form it currently exists in.