In this text, what is the symbolism?

"They do surgery in the Capitol, to make people appear younger and thinner. In District 12, looking old is something of an achievement since so many people die early. You see an elderly person, you want to congratulate them on their longevity, ask the secret of survival. A plump person is envied because they aren't scraping by like the majority of us. But [in the Capitol] it is different. Wrinkles aren't desirable. A round belly isn't a sign of success."