In a perfect world, people would get good, accurate info and choose healthy things.
That never happens.
Instead, we're faced with imperfect choices. Everyone likes 'freedom', and there's definitely 'too much' government telling people what to do and not do.
But sometimes there are choices between the government doing more, and the alternative of hundreds of thousands of lives lost to people taking advantage.
For example, when the government knew smoking was killing large numbers of Americans, it could take a stronger action - for example requiring private companies to design their packages with a government mandate to add warnings - or it could take the 'free Americans make their own choices, do nothing' approach with high casualties.
Part of the issue in the politics is simply people's understanding. When people did not know about the drug addictiveness of nicotine, they had a very different view of the choice to smoke than knowing that. When people were still conditioned by decades where a majority smoked and nearly ever 'sexy movie star' did in secretly cigarette company paid product placement that made people still think well of smoking as a 'sexy and desirable' activity that affected the politics also.
It took decades to shift public opinion and overcome those early political problems.
I think the government in our democracy does have a strong obligation to 'do more' in the people's interests on things like this, such as the history with cigarettes - to strike a balance between 'it knows best', which it often does as much as people with parent issues hate to hear that, and the freedoms of people including to to 'wrong' things.
What should be, but isn't, not controversial is for the government to do research and educate the public when it's being lied to or just not informed.
It's often the case that on an issue, people start out with a kind of misguided understanding and later have a better one. For example, in the civil rights movement, many people just viewed it as a 'states versus federal government' states' rights issue without almost any concern for the harm to blacks - something that's greatly changed as more appreciation for equality has come to exist.
This issue on food for many will initially start out as anti-nanny rage, but if people come to understand it differently - with people not appreciating the threat - that can change.
There's a bottom line that not many care about now but could - how many people are killed, how much are healthcare costs increased, for highly profitable 'bad foods'?
One way to look at them is about 'FREEDOM!'; another is to look at them as 'oh, selling really crappy chemical processed food is about corporate profits that kill people'.
It's a balance in democracy, not extremes of nannyism nor laissez-faire.