Yup half of my friends who come from a ruby background outright disliked the idea that they have to know Java or look at Java docs to achieve any effect in their code.
Infact this hatred towards Java is a very strong sentiment in the ruby community mostly because of the handy work of DHH, who himself dislikes Java with a passion. Which is why it is very much ingrained in the community. And this passionate dispassion for Java is prevalent in many communities including Python and JS.
What Rich thinks is an Advantage for clojure to have a prebuild user library that can be leveraged from the host VM to get work done and be productive fast is also a problem for many who dislike Java Docs. I think Rich’s target demographic is the enterprise Java people who might be bored of writing Java.
Because clearly clojure isnt attracting many people from other languages unless they had some kind of earlier interaction with lisp/scheme/elisp.