How does this prove Rove was right?
The guy who wrote that is from the left. Aaronovitch used to be a communist (in the Young Communists, to be exact), but moved more moderate over the years. He wrote the piece immediately after Sept. 11, and a few others, pushing for "understanding" and relatively non-violent resolve (he said picking off the perpetrators was ok, but an all-out assault on terrorism would be bad). He's since moved further right, and was an avid supporter of the war in Iraq, and still is, as far as I know.
Anyway, point is, he used to be a leftist, he wrote that piece promoting tolerance and understanding but not retaliation, and has since revised his views on the WOT. So basically, his opinions early on supported what Rove said.