Isn't legislation against high calorie foods sort of like when parents '"toddler proof" the house?

Parents put up little gates on staircases, and put plastic caps on electrical outlets because toddlers are too dumb to recognize some forms of peril.
We have government (parent), banning obesity causing food (potential danger), and people (not toddlers in this case) that apparently are too dumb to know that being fat is dangerous, or what it is that makes them fat.
Is the same principle in operation?