The title suggests that the aurhor will provide reasons for why OO actually is bad, but he doesn't. Why is it so fashionable to bash OO anyway? It's just a tool, it can be used wisely, but often it is not, which gives no reason to blame OO.
Let us not forget that tools themselves are designed, and some designs can be downright pathological. A kettle is a tool for making tea, but (in deference to Donald Norman) there is a reason we don't make kettles with the spout on the same side as the handle. Just because someone designed a tool to solve a particular problem does not mean that it's the best way to solve that problem. We can and should be critical of our tools without emotional attachment to them.
Actually, you can. The Clojure/Java interop is pretty good (http://clojure.org/java_interop, http://clojure.org/compilation) -- you can call Java from Clojure and Clojure from Java.