If this were true, especially #4, why aren't more companies doing business there? The instability seems to be reducing resource extraction. It seems China wants to increase stability and build infrastructure so that they can can exploit it. The only industry that would likely benefit from the inability to extract resources are the diamond companies since price is artificially inflated.
This reasoning is absurd in every way! Besides assuming China is an enemy of the US - what does that even mean?
Let me illustrate how ridiculous this reasoning is: "North Korea wants to prevent rampant global warming, North Korea is an enemy of the US, the US wants to...?"
Ever hear the enemy of my enemy is my friend? If the enemy is instability, the US and China may have a shared goal and cooperate (or at least not sabotage each other on that issue).