I have noticed often IRL and online , if somebody knows someone who is a benefits cheat (or at least, this person claims they are) and happens to be obese or overweight, then the person (or newspaper etc) will often mention their weight describing them as "Fat disability faker" or "Obese Benefit Scrounger" etc.
But claiming benefits (either genuinely or falsely) is not linked o being fat- the medical tests for them are very difficult and people do not get handed a wodge of money just for eating too many pies. Nor is having a dishonest or criminal nature.
I am 24 stone. a size 26-28, and I am on ESA and PIP and Housing benefit due to serious physical and mental health issues. I am of course claiming genuinely, but as a fat person I worry that this perception so many have of fat people being scroungers will lead to genuine claimants like me who are overweight being treated even more badly than we already are by the general public. As well as the disorders I am claiming benefits for, I also have a Binge Eating Disorder. In my OA fellowship, I have known people who have shoplifted food but that is the only link I would make towards crime and obesity- I think surely criminals come in all shapes and sizes?