I agree with you, after working with Clojure for a while I started to really like the beauty of Lisp. But I also think the author can have their own preferences, and it is fine since it is their project, so they're free to do whatever they want.
Oh certainly they should be able to do whatever they want! I just think their framing of what they're doing, where they disguise a personal preference as a nonsensical and disdainful attack, is unfortunate.