What do you mean wrong? That study says someone at that weight can expect to die 8 - 10 years earlier. And that's by putting on weight in midlife. So probably die a lot sooner the longer you are obese. Plus the average life is 78. But that means someone can live to 98 and someone can life to 58. The one who lives to 98 is dang well going to be in decent shape. Pretty much obsese people are going to die very young considering.
Anyway yeah. I just think it's a shame for people to die so young and not take care of themselves when they have family and friends and people who care about them. Way to much of your life should be left to live still with them. You can't stop taking care or your body and health. You just can't.