First of all, its not my idea. I am just a messenger.Just imagine what would happen if China openly supported Bin Laden during those "crucial 10 years". That would undoubtedly put China in the crosshair of the US. And it would be a China vs. US conflict, not a US vs. Bin Laden...
China benefited from bin Laden exactly because China stayed out of it. It stayed out of the entire conflict. That was why China could focus on economic development while the US focused squarely on Bin Laden. China succeeded because it stayed away from the fire, not jumping into it.
And Bin Laden didn't directly help China. He started a fire somewhere else, which drew attention of everyone and allowed China to develop in peace.
Similarly, aligning yourself with ISIS would be the opposite of what China did "during those crucial 10 years". Bad idea.
OK, let me ask this, if conflict break out, Chinese warship has been sunk . Do you want to launch ASBM against carriers for retaliation or do you want to collaborate and work with ISIS and give whatever they needed?
Sa growing trend in China favors the second option. Because ASBM sinking carrier could invite nuke retaliation.
The less of two evils.