Avoid buying products using them, for instance.
How the average American, with the worst consumer protection laws and a terrible food culture, is supposed to find a way?
Surely there's some hyperbole there. For example, the US doesn't have a problem with lead chromate in their turmeric.
Exceptions don't disprove rules.
Exceptions don't disprove rules.
So a single counterexample suffices.
https://www.foodsafetynews.com/2016/08/six-brands-of-turmeri...
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5415259/
What changed?
Forever chemicals, like PFAs can end up in food, but it is not made to be in food. The nature of this pollution means that trying to prevent environmental pollution to end up in your food is a fool's errand. The solution is to avoid releasing more of the substance in the environment.
For instance, PFAs see a lot of use in water-repellent clothing and material. As these products take rain, some of the repellent is shed in the environment, and contaminate stuff we consume. Awareness about it in the population and people looking to buy something else can lead manufacturers to look for alternatives and develop new lines of clothing.