The most puzzling thing he says is that Clojure's language adoption efforts have been a failure because Clojure is over three years old and hasn't broken the top ten in some pointless programming language survey.
How long did it take Python to get there? I'm guessing at least a decade. And does it even matter?
I use a language's Freenode channel is a general barometer of the state of its community's health, and I notice no more questions from bandwagon jumpers who have no clue whatsoever of what they're getting into on #clojure than I ever did on #scheme. I use those two channels for comparison because the sort of questions in question are similar: based on received assumptions that are counterproductive to being effective.