The argument you’ve presented oversimplifies complex public health issues by lumping together unrelated substances and policies.
Tobacco, universally acknowledged for its lack of health benefits and high harm potential, is incomparable to substances like cannabis or alcohol, which may have varied effects and potential positive uses.
The term ‘nanny state’ is a reductive way to dismiss nuanced health policies that aim to balance regulation with individual freedom.
Regarding obesity, it’s a multifactorial issue. A simplistic approach like banning sugar or fast food ignores the broader socio-economic and lifestyle factors at play (although a sugar tax is probably not a terrible idea).