Fan Jinzhong Residence is clearly a history of struggle, how did it become a joke?

The Scholars is a novel written by Wu in Qing Dynasty, which is humorous and easy to understand. At the same time, there are a lot of foreshadowing, which is praised as "the best novel in Qing Dynasty" by later generations. Among them, "Fan Jinzhong Residence" is the most wonderful fragment written in the book. Centered on Fan Jinzhong's plays, this paper uses comparative methods to write the performances of various characters, exposing the social situation and people's indifference at that time, and satirizing the drawbacks of the imperial examination system. But do you really think this paragraph is derogatory? Let's analyze it below.

This is obviously an inspirational story, and I don't know when it will turn into a laughing stock for future generations to satirize a person.