I was mostly supplying an example rather than taking a side in the philosophical argument, to be clear. I’d call that idiomatic Clojure, but I’m a heathen that very much appreciates Clojure being on top of the JVM and offering Java interop.

Another big Clojure UI/graphics framework is Quil, which is based on Processing and does an even worse job of hiding it’s imperative/stateful core.