Smoking cigarettes is distinct act you can choose not to engage in at all. Obesity is a result of how much food you eat, the types of food, how active you are, etc. and each of those are influenced by many factors like eating habits learned growing up, local economics, how able bodied or disabled you are, etc.
Smoking isn’t an outcome of a variety of actions, obesity is. Saying “motorcycles are dangerous, don’t ride motorcycles” is very different than saying “don’t drive dangerously”. You can simply choose not to buy or ride a motorcycle to reduce your risk of injury. But “not driving dangerously” is not so simple. Do you need glasses and don’t realize it? Did you learn bad driving habits? Are there too many distractions in your car? It isn’t a simple answer. It is the same with obesity. It isn’t tiptoeing around it.
Smoking isn’t an outcome of a variety of actions, obesity is. Saying “motorcycles are dangerous, don’t ride motorcycles” is very different than saying “don’t drive dangerously”. You can simply choose not to buy or ride a motorcycle to reduce your risk of injury. But “not driving dangerously” is not so simple. Do you need glasses and don’t realize it? Did you learn bad driving habits? Are there too many distractions in your car? It isn’t a simple answer. It is the same with obesity. It isn’t tiptoeing around it.