I get the impression that this course lowered the threshold to exploring the functional paradigm for a lot of students who were aware of it but never took the time to do it on their own. Ten thousand new programmers in one language is no small achievement.
Who here wouldn't jump at the chance to join a MOOC on Haskell taught by Simpon Peyton Jones? Or Rich Hickey teaching Clojure?
I hope to see more learning resources like this in the future.