Why do you think that is?
I honestly have no idea. What you wrote seem plausible and China is being wise and not jumping in too quickly.Why do you think that is?
Best I've heard is from Joel Skousen (unsourced) in which he says China has been built us and The US is being deliberately weakened to induce China to attack it.
When China does attack, The US will wheel out the technology that is under-wraps and has not been sold to China, and call for a militerised world-order to combat China.
It's one of the few plausible takes IMO. I can't see a country being as stupid as it appears The US is. Plenty of evidence elites plan to roll up America and replace it with global governance.