chapter 48 what is the purpose of the smokies spreading the truth about becoming pretties to the uglies?

From the text:

One new legend towered above all the rest. Maddy had decided that the brain lesions couldn't be kept a secret anymore; every ugly had the right to know what the operation really entailed. Tally and the others spread the rumor among their city friends: Not just your face was changed by the knife. Your personality - the real you inside - was the price of beauty.