> Once you start eating them it's difficult to stop because they override normal satiety mechanisms
But it's not difficult to stop. From a volume/mass perspective I eat fairly small amount of Doritos in sittings compared to most "healthy" food. Its just that Doritos are super calorie dense. I definitely eat a higher mass of eggplant in a sitting than Doritos. And when I don't have access to Doritos, I don't ever think of doing anything unethical or illegal to obtain access.
Also addiction is not defined by unethical or illegal behavior - it's about continuing to do something even when you know you're harming yourself by doing it (and even when you actively want to stop). People go to great lengths for things they're addicted to without doing anything remotely unethical or illegal but while still doing things you'd probably consider totally insane.
That was just an example. Often people will do unethical or illegal things to feed an addiction. Rarely, do people do things, like prostitute themselves for junk food.
Now your point is that people may eat themselves into unhealthy situations and want to stop. That is probably true, although I wonder how much of that is convenience, rather than addiction.
But it's not difficult to stop. From a volume/mass perspective I eat fairly small amount of Doritos in sittings compared to most "healthy" food. Its just that Doritos are super calorie dense. I definitely eat a higher mass of eggplant in a sitting than Doritos. And when I don't have access to Doritos, I don't ever think of doing anything unethical or illegal to obtain access.