Also, where do you go from "preferring strong CS theoretical grounds" to "cutting corners"? They don't have to be mutually exclusive.
That garbage collection that Haskell has? Guess where that came from. The whole "functions as data to pass around", guess where that came from. It was those pesky lispers on a Tuesday.
Edit: typo
Da hell you're talking about, friend? I said nothing about "people", or them being smart or dumb; just a difference in cultural stereotypes.
Now you're ironically "proving the point" I didn't make by saying some dumb shit and pulling me into this pit too. If I was actually smarter I'd probably just ignored it. Reminds me Billy Madison quote: "everyone in this room is now dumber for having listened to it. I award you no points, and may God have mercy on your soul."
Again, check HAKMEM from ITS/Maclisp/PDP10's (The OS from Richard Stallman took all the ideas for GNU Emacs, the GPL license, the free software movemement and whatnot). Lisp itself accounts for tons of papers and innovation.