Chaucer wanted to show a real picture of people, however, to make these characters more literary and adapted to the narrative he was writing, he introduced more cartoonish and exaggerated characters, like caricatures.
We can arrive at this answer because:
"The Canterbury Tales" was written to show a true portrayal of social classes in middle-age England.
The author wanted not only to introduce these people, but to criticize and praise the way they behaved.
The objective was to present a real portrait of society, but it was necessary to adapt these characters so that they could show themselves more literary and have highlighted characteristics.
For this reason, when we read "The Canterbury Tales" we can see caricatured characters, exaggerated, but that still represents society.
In the passage, it says that Edmund could not bring himself to like Mr. Rushworth, but that he "could allow his sister to be the best judge of her own happiness."
