Fat shaming/hate needs to be done on a large scale for it to work. This is why Japan doesn't have the obesity problem that the U.S. does.    If the fatties have any safe spaces at all, they'll just waddle back to them any time someone makes them feel bad.  E.g. a fatty feels bad about being fat for whatever reason and has to choose between losing weight or stuffing its face while its enablers tell it how beautiful it is, it's pretty obvious which one it's going to choose.