I guess that points out another issue with the article - it talks about programming in general and doesn't take into account that it's way easier to write multi

I guess that points out another issue with the article - it talks about programming in general and doesn't take into account that it's way easier to write multi-threaded applications with languages that are explicitly created for developing multi-threaded application and languages that just happen to support threading. So comparing for example Clojure and C++ in regards to multi-threading Clojure will of course win, since C++ only recently got official standardized threading implemented and is far away from a really good concurrency support.