That's worth noting, but if we were to apply that metric to dismiss a piece of scientific work, we would also have to dismiss anything coming out of Chinese state-controlled research labs for being biased. After all, who would fund such research? Certainly not a pro-CCP entity.

There is no such thing as an unbiased source, especially with anything concerning China. If the scientific arguments presented hold ground, it shouldn't matter who authored them, and if the authors are so biased that they provably gave up on scientific principles, that should suffice to discredit the work.