After reading this work which you have shared with me, I am not particularly convinced, I am afraid.
This work simply wishes away massive problems to the claim that China is socialist (multi-billionaires in the Communist Party, massive bank sectors, economic imperialism) by doing little more than citing some Castro quotes (while Castro often had many good ideas, and led a Socialist state, these quotes totally forgets the geopolitical context for why he would be servile to China) and saying that "billionaires are state-owned!".
They forget the massive rule of the ultra-rich in Chinese politics (Xi Xinping has a net-worth in the hundreds of millions), how there are atleast 100 billionaires in the highest levels of the Chinese Communist Party, and how the Chinese government has very commonly acted in favour with the ultra-rich, such as degrading labour rights (in a way similar to that of Neoliberal governments), exploiting labour markets overseas, and overall permiting the expansion of the ultra-richs' power.
At the end of it, it offers what amonts to capitalist and billionaire apologetic arguments, only it is exclusively being apologetic towards Chinese capitalism. It says things like "we need multi-billionaires because they build advance trains and improve the lives of the workers!". This is nothing more than a crude repeat of Reagans "Trickle-down" economics, and a total justifcation for bourgeoisie. This just exposes the degree of logical fallacies and mental gymnastics Dengists must rely upon to claim that clearly Capitalist and social-imperialist states like China are "socialist", to the point where they emulate the same arguments of Far-righters.
I still do not see how we should not accept over viewpoints on the economic system of the People's Republic of China.