Conventional wisdom, outside of government, is quickly moving to the idea that high-fat is good and only carbs are bad. This "Libertarian" writer's anecdote illustrates why he should stick to Libertarian principles. Do-gooder Statism only increases suffering while giving the self-satisfying illusion of virtue.
It’s simple.
Raising ones child how he sees fit is fundamental, so the Constitutional standard of strict scrutiny should always apply.
Then you tailor the law accordingly to stop the slippery slope nonsense.
Then for good measure you make sure the state agency is barely funded, such that they have only the option of focusing on the mist serious cases.
In my view the funding issue nearly solves the problem.
Then you just accept the fact that there are no perfect solutions, and any problem the government tries to fix will only make it worse.