No citation, but If you think about it it makes sense: is you have no fat left, and aren't ingesting enough calories, your body would rather burn muscle than organs.
You would have to be adding that either US intelligence ops are so much more talented than Chinese ops, or that China is so much more principled than the US. Neither of which strike me as accurate.
If the US is doing it, China is at least TRYING to do it.
We need a corporate death penalty: when a corporation has been convicted of murder out other acts, the corporation should be dissolved, the assets sold off, and the proceeds distributed to the victims families. As it stands now, the execs get their gold, the corporations get a slap in the wrist, and then it's business as usual.