I've seen plenty of Clojure core.async code that doesn't look like this at all. ...

swannodette on Jan 9, 2015 | parent | context | favorite | on: Master Concurrent Processes with core.async

I've seen plenty of Clojure core.async code that doesn't look like this at all. Also this discussion isn't considering the other reason for core.async's existence - ClojureScript - the patterns are completely different.