Still, you are unfairly singling out China. From the article you linked:
"It was the first known successful satellite intercept test since 1985, when the United States conducted a similar anti-satellite missile test"
"In February 2008 the US launched its own strike to destroy a malfunctioning US satellite, which demonstrated to the world that it also had the capability to strike in space"
China's test created far more debris than any previous incident, including the US incident you point to. Furthermore China created that debris in a much higher orbit so it will take much longer for it to naturally fall out of orbit.
That single incident is responsible for something like 10% of all debris in orbit that is large enough to be tracked by NASA.
It's closer to 20% due to China's ASAT test and 80% due to the collective spaceflight activities of the entire world over the last half century. You know, vs. one single event.
If China dumped as much garbage into the ocean in one event equal to 20% of the entire world's ocean dumped garbage since 1957 you can be damned sure they'd catch some flak for that.
I don't know why people in US automatically think they have the right to do anything they want, yet when somebody else does the same they find every reason to brand them evil conveniently neglecting everything they did.
There is no point in trying to act innocent, space or other wise US has been screwing earth since decades now. Wars, weapons and emissions all in the name of development. Yet now when some other countries do the exactly all that for similar reasons, they become bad?
Did you even read the comment? One Chinese demonstration created 10% of all objects we can track. The US demonstration was held in a much lower orbit and most of the fragments it created have probably burned in the atmosphere by now.
The events are not comparable. The Chinese test represented wanton disregard for orbital debris, to an extreme degree. The US anti-satellite tests (in 1985 and 2008) were on low-altitude satellites using sub-orbital weapons. This led to much smaller debris plumes that reentered the atmosphere in a short period of time (weeks or months).
Can you see the impact of the debris created by the 1985 ASAT test? No? Can you see the little bump that starts in early 2008 and goes away by 2009 that represents the debris generated by the 2008 US ASAT test? Now look at the impact of the Chinese test, it's night and day. And that's due to the altitude of the event (865 km, well above the outer fringes of the atmosphere, where orbital decay is very, very slow) and the nature of the impact from a counter-orbiting kinetic-kill vehicle, which dumped at least 4 times as much kinetic energy into the impact at the very least.
While launch vehicle and satellite makers have been trying to make their launches cleaner and leave less debris in orbit here comes China to dump in one go the same amount of debris that it takes the ENTIRE WORLD two full decades to generate. In fact, they produced about twice as much debris as the worst case natural space disaster imaginable, two satellites hitting one another (the Iridium 33 / Kosmos 2251 collision).
"It was the first known successful satellite intercept test since 1985, when the United States conducted a similar anti-satellite missile test"
"In February 2008 the US launched its own strike to destroy a malfunctioning US satellite, which demonstrated to the world that it also had the capability to strike in space"