He does not exactly make a cogent argument. Paraphrasing part of it, "Stuxnet was made in China because Realtek and JMicron are Taiwanese, which is basically China."
I may have read the article less carefully than you, but I remember one sentence about China, referring to some other article the guy wrote.
My point is that the press Stuxnet is getting is irrelevant to the actual stakes of the game that was played.