I read the Guardian article which claimed fat people were no more likely to die than thin people. And it's rubbish.
Fat sedentary people may have similar mortality rates to thin people who exercise. However, this is at the cost of vastly increased resources in medical support as, one by one, the organs of fat people cease working. Sure, modern medicine can keep you living with diabetes, renal failure, liver damage, clogged arteries, etc. But the cost is incredible.
In any case, the article is simply wrong as regards heart attacks and strokes - obesity *does* cause increased occurrence of both of these.