It's impressive what the collective human effort can accomplish when enough people put their minds and will to it.
I have stopped eating basically anything packaged, cutting few things out first and over time practically all of it. It wasn't an especially conscious effort even, I feel like I might have fallen out of test groups because I don't even particularly enjoy those foods now even as massive sweet tooth. Maybe it was because I became more aware of the contents and ingredients of food and stopped making the associations I once made.
It's another symptom of alienation. People try to reclaim agency by acting out against what seems to fall out of control of industry and media. America is an urban, developed society so things like raw milk and meat only diets seem both authentic and transgressive. There is a certain level of glamour to these things because they are out of sight for most almost all their life, even if they buy their raw milk in a carton and their meat prepackaged in a grocery store.