I think most people are 'addicted' to food.
I both disagree with this and not sure why you put "addiction" in quotes. Food is unique in that we all need it to live, but the best way I could explain food addiction to others is that there are people who enjoy drinking and then there are alcoholics.
My doctor put me on an anti-depressant once and I hadn't initially that it was also used to control compulsive behaviour and treat addiction. One morning after about a week of taking it, I woke up, padded to the kitchen to grab food (as I do first thing when I get out of bed,) opened the fridge and stopped. I didn't want anything. I didn't want it because I wasn't hungry. That feeling really shocked me as it was entirely new!
And do it was, for the entire time I was on the meds: I still ate and enjoyed food. But I stopped when I was full and didn't really worry much about it when I wasn't hungry. The obsession with getting to that next morsel, that next snack, to that next meal was gone.
This "addiction" for some: it is very very real.
ETA: From reading, it seems like people just have very different relationship with food. For example, I'm like MeShell: food consumption is not related to feelings of hunger in any way.
Experiences of someone like Jewlz, who is constantly hungry, are foreign to me. If my eating was driven purely by that, I'd probably eat only two apples and an egg a day, or something. And those are just two permutations.
There are infinite number of reasons why people gain weight, stay overweight, can't lose weight. Isn't it ridiculous to think that there's only one way to address that?