Because people would like to think China as a single entity acting in a clear single minded way using a single method.
The fact is China is the largest bureaucratic country, the DDoS may or may not coming from any administrative authority layer, or just business strategy to spur your competition to anti-China side, so government will act accordingly and take care the competition for you.
Pour encourager les autres? If annoying "P""R"C means you hurt worldwide, perhaps the next company with evil foreign values will avoid trespassing into the only harmonious country or something.
Agreed, this news on TC put up a few facts and seemed to imply the link between them without a logical support, which is not a typical behavior I would expect from a good tech media.
