But notice that his arguments are always focused on the tool/feature.

You can look at Clojure as a "reference implementation" for many of Hickey's ideas. (A production-ready reference implementation, of course.)

But all of Rich's ideas/"features" can be applied in your language of choice. (Immutability, functional programming, avoid-ADTs, how one should do versioing, etc.) I've employed many of these and other of Rich's ideas effectively in Java. The ergonomics would be better in Clojure, of course, but for (probably good) political reasons I have to use Java at work.

Just notice that Rich's rhetoric is nearly always focused on specific problems and solutions that transcend Clojure.