As I said, there are certainly mental and physical health issues that leave one predisposed to being overweight, but that does not change the basic arithmetic of caloric intake versus work output. Merely that some have to work harder to rise above their condition. Just as I could accept being a social loner my whole life and feel sorry for myself, or I can find happiness in being who I am, and keep trying to find people to hang with, so can people who are fat choose to accept their condition, or do something to change and improve their lifestyle.
And if they've turned to eating to combat depression, well that in its own way is problematic, because it suggests someone turning to unhealthy things to combat mental illness, and I don't desire that in the least.
I've battled depression, especially after I was laid off. You know what I did? I sought counselling, and I went for a run. Whenever I'm down, I turn to physical activity, to think, to keep energy levels up, and keep the natural endorphins flowing. I need no drugs or food.