Education, as you suggest only works for some percentage of the population who have the time and wealth to learn what is good for their body and pay for it. Without government regulation you’re basically abandoning some percentage of the population to eat whatever crap has the lowest price and highest margins. We already accept and benefit from regulation on what can be put in food - insect parts, inorganic additives, etc. - but those regulations have not kept up with advances in food tech.