for instance, the US spent most of the 20th century vilifying communism/socialism, going to war, invading other countries, and undermining independent states through all manner of subterfuge. do you really think it's that far-fetched that those experiences pushed china away from the kind of budding capitalism described in the article?
certainly open to debate, but not summary dismissal.
The British never controlled China anywhere near the degree they controlled, say, India. Their presence didn't penetrate beyond the coastal provinces (you can see this in that the Chinese presence in other British colonies was largely Cantonese/Fujianese). Even Japan never managed to control more than a section of the country.
The Chinese civil war is legitimately (not euphemistically) referred to as a civil war: Elites battling for control as the center weakened.
I'll agree that the use of the British as a propaganda foil was somewhat effective, and legitimately pointed out atrocities and unfair treatment by all the foreign powers involved. But the value of that propaganda (still effective today) was disproportionate to the actual influence. Nothing wrong with that by the way: state building always involves such propaganda.
By contrast you can see that Britain fully controlled the Indian economy (though for many people lower down on the feudal hierarchy the British were merely one part of the control system, essentially trading one prince for another). And, like China, Britain was one in a punctuated string of foreign invaders who displaced the remnants of a fading prior system. "Indian" identity was more a construct of the educated upper classes who were able, in the 20th century, to eject the British.
the british didn't need to control china in any degree for this to happen. just some greed at the wrong time, in the wrong manner.
That's too crude an analysis. The Qing dynasty was hidebound and in long decline, the feudal system was breaking down, and the communists were only one faction fighting in the civil war. During WWII the nationalists were provided training, support and materiel by the US; the communists received the same from the Soviets.
The Opium War was merely one in a chain of events, and far from the most proximal.