My point is that the decision to be obese, excluding other factors like disability or mental illness, is 100% on the person who is obese. Nothing is stopping someone from eating less and exercising. This is something that anyone can do, regardless of income level. You can eat fast food every single day of your life provided you exercise, count calories, and take a multivitamin - you simply cannot gain weight and you will indeed be healthy. Being obese is a personal decision, one that is lazy and will ultimately lead to an earlier death than would otherwise happen.
Why are disabled people excluded from responsibility of this "personal decision?" Disability does not prevent a person from eating less or exercising more.
A lot of disabled people lack arms and legs, or have asthma so bad they can barely walk up stairs, or other varied reasons they are unable to exercise. It depends on the disability. But for the large majority of people that truly have nothing preventing them from exercising and eating right other than willpower, they should realize how blessed they are, and what a privilege it is to exercise.