I have a hard time giving weight to a self reported survey like the one you linked. I dont doubt that people in china feel like they are free, and I suspect that many also ranked their freedom highly because they fear reprisal if they say otherwise.
Many aspects of China are democratic, other parts are not, Xi Jinping is a life time dictator and cannot be replaced by democratic systems. He is an authoritarian and Bourgeoisie, your suggestion that the working class oppresses capitalists is demonstrably false https://en.wikipedia.org/wiki/Foxconn_suicides for example. These were western capitalists treating workers with raw brutality. The CCP was complicit and did not protect their workers because it was seen as generally beneficial to have these manufacturing contracts.
You don't know me, you are making assumptions about my knowledge, experience, and connection to China based on a few responses on lemmy.
I hope China is able to return to the ideals that were espoused through the revolution, and I will cheer if they truly reach a level of equality not yet seen in humanity.