That's nonsense. No matter how corrupt the CCP is, it cannot have a stake in all court cases in China. Maybe politically sensitive trials are a farce (arguably that's the case in much of the West too, but that's a different story) but that doesn't make the profession as a whole a joke.
This is from my Chinese wife, basically by "joke" I mean its not the top students who are going into it. You don't become rich becoming a lawyer. The top students in Schools join government, become Engineers, do Business, etc.
A lot of what I've seen is that boring small civil and criminal cases (shoplifting) aren't that different in China than they are here.
The central government in Bejing doesn't care even a little bit about some property dispute in Henan but there's a local apparatchik who cares or who could be made to care with the right consideration.