We are so far down this rabbit hole.
Taxing sugar to curb obesity is just a piddling first step. 
The other carbs we have been recommended to eat by experts: pasta, rice, potatoes, etc, are nearly as bad.
The science proving my 'blasphemy' has been clearly proven in the keto/fasting literature. But like all paradigm shifts, will likely take a generation to implement.
Given there is no money to be made with this shift.... it might take two generations.