The author conveniently leaves out the huge, gaping difference between Western military hacking units and Chinese military hacking units: their targets.

Western military hacking targets are other governments and militaries. The objectives are military.

Chinese military hacking targets are companies. Intellectual property is stolen, and handed off to state run companies. The objectives are economic. Which makes sense when you consider that the Chinese leadership realizes that they have to keep the engine going to placate the masses, or risk facing another revolution.