As far as I am concerned, they are all being deeply deceitful. If you make some "fact" up, and pawn it off as the truth, you are being dishonest.
Support for clojure's worldview is easy to find on the web. It comes both from the clojure community itself (see Rich Hickey's talks) and from the wider communities that clojure draws its ideas from (other functional languages, lisp, etc.) Decide for yourself if you find the arguments compelling. In my experience, the clojure community is not interested in promoting clojure for reasons of tribalism or vanity, but because they can indeed use it to produce better work faster.
Example needed. Cascalog?