Anyways, it's just too opinionated, from his 4 examples - PHP, JS, Python, Ruby - only PHP and JS are really widespread, with Ruby still rather rare and Python somewhere inbetween.
And then there's this pearl:
From TIOBE http://www.tiobe.com/index.php/content/paperinfo/tpci/index.html :
From LangPop http://langpop.com/ :
Just for the record. Certainly they are all very popular languages.