They're working to reduce corruption and they're lifting millions out of poverty. China has progressed a lot, I don't see how the CCP is entirely bad. Tibet and Xinjiang are exaggerated, they were worse before Chinese invasion.
They are still a totalitarian regime, with the power residing almost exclusively in the hands of the government. They strictly regulate the economy to meet unified goals, so their "capitalist economy" really only benefits the government, not the citizens. While they do lift people out of poverty, it's only because the government offers very specific incentives to a small number of citizens, in order to appease public opinion. Large swaths of the country are working in horrid conditions, for ridiculous hours, for minimal pay, and being kept in poverty. This impoverished population faces extreme regulation on the amount of children you can have, which means that about half of all Chinese newborns face immediate abandonment or post-birth abortions. Finally, the government regulates personal philosophy with such intensity that Chinese citizens caught practicing Christianity are frequently arrested and sometimes killed for their beliefs.
It's not just about the past. China is still a pretty rough place.