Earlier quoted context omitted.
The Python paradox is interesting in 2018. At time he wrote this, Java was the go-to language to teach in university and Python was reserved for hobbyists. It seems that has almost completely flipped now, and everywhere wants to teach Python first. Evidently, there's an awful lot of no-so-smart python programmers available on top of the smart ones now. It looks just like Java looked in 2004.
I definitely disagree that java is looking like - or even starting to - python did in 2004, it still has a huge market share, even compared to python. Yes python is definitely more popular now, enough so that the python paradox doesn't even apply, but it will probably never apply to java, or at least not in the current computing paradigm.
Elm, Haskell, Clojure, etc, seem like they fulfill the role of "2004 python" in 2018.