IME many Clojure programmers come from non-Java backgrounds and aren't looking for a Java like experience. So I can believe the "more better Java" audience probably heads for Kotlin today. I think this is a win for both the Clojure and Kotlin communities and developer cultures.

To inject some time perspective, Clojure is 14 years old, so it's not too bad to be moving from initial steam to young-adulthood steam now :)