i'm a great believer in the bell curve when describing naturally occurring populations
this depiction of the curve shows percentages of the population that fall within 1, 2, 3 and 4 standard deviations of the arithmetic mean - or 'average'. Average falls dead in the middle of the curve so that's where the most individuals are. standard deviations are shown on the horizontal axis as positive/negative 1 through 4
so 68% of a population falls within 1 standard deviation of the average. a total 27% of the population falls between 1 and 2 standard deviations (positive and negative combined). and a total of 5% falls in the greater than 2 standard deviations
'normal' people fall within the positive and negative 1 standard deviation limits. that is, no significant diseases, conditions, etc. if anybody from that category is morbidly obese, then they are just plain gluttonous or lazy or both. this group comprises 68% of what we are talking about
'controllably sick' people fall between the positive and negative 1 and 2 standard deviations. they have either naturally husky body types or have borderline health conditions that if ignored can easily lead to morbid obesity. in some cases they require reasonable medical intervention, or counselling for self-image problems, or they have to lay off the smokes and booze and drugs. but these are all attainable goals. anybody that can't attain them just isn't paying attention. this group comprises 27% of what we are talking about
'uncontrollably sick' people fall in the greater than positive and negative 2 standard deviation limits. genetics, thyroid, addiction issues, diabetes, cardio-vascular problems, cancers, etc. all can lead to morbid obesity in these people. this group comprises only 5% of what we are talking about
so you're all correct, you're just not seeing the entire problem
NOW, making fun of these people to their face is another completely separate problem altogether. this is called being an asshole - and there's just no cure for that