What would be great is if fat people could be defined by themselves, on their own terms. Ditto fatness being defined on its terms.
Whether it's fatuous phobes who insist on comparing being fat with smoking, drinking, drugging or some fat activists who crib civil rights movements or 'obesity', folklore, rather than look at fat people and talk about them.
Fatness needs to stop being like an abandoned object always projected on. This needs to be for all of us.