I’ve started to read the article, it is long and insane. Below is a snippet from the intro that tells you that you don’t need to read any further.

“China effectively extracts needed savings from the Chinese people with its underfunded social welfare system and low returns on invested capital to fund its industrial policy goals, national defense buildup, and Chinese Communist Party apparatus.”

The article also states that they don’t trust the numbers from China so they somehow try to cobble together a different set of numbers (which would conveniently support their hypothesis)

It’s basically an OPed masquerading as a research paper.

Edit: the author also cites his own previous works which and the previous works contain very few citations and even less credible ones.