No, on the contrary, I understood his/her reply to be saying that he/she had not used Clojure, but that its influence on the Javascript ecosystem was such that

No, on the contrary, I understood his/her reply to be saying that he/she had not used Clojure, but that its influence on the Javascript ecosystem was such that a user of modern Javascript could consider themselves to have "experience of Clojure" in a sense. We don't have to carry on debating it, but have another read of the reply in question -- I think you'll agree that it was in fact saying that they did not have any experience of Clojure; only of Clojure-influenced Javascript.