You're not exactly wrong if I parse it carefully with rigid dedication to your desired interpretation. The overall hyperbole of the argument prevents that interpretation from being natural to the reader. (websites in 2011 were just documents with a little sprinkle of javascript here and there is where you 100% lose me)
Perhaps I'm saying exactly what I wrote and not your explicit misinterpretation of it.
Edit: @refulgentis: Google launched AngularJS in 2010, for example.