i'm not saying anything about the content of infowars but I can't believe how much money people will spend on "supplements", and pills and artificial products. and yet, somehow don't have any money for fruits, vegetables and beans. i can only imagine, there's something broken in how people are being raised.
You're underestimating how many people live in food deserts and basically don't have access to fresh food. That might seem like a nitpick against a larger argument, but I think it serves as a good example for why you need to take a close look at the environment that these people exist in as a whole, and that it likely goes beyond their innate habits or those of just their immediate family in childhood.
People who value fresh produce are going to go out of the way to get it. If enough people do this, environments will adapt to that demand. NYC Chinatowns used to be quite poor and discriminated against, but they were still able to establish their own supply chains that provides cheaper and fresher vegetables than anywhere else in the city because vegetables are a quintessential part of Chinese cuisine. Food deserts, like gentrification, is a concept that assumes that demand follows supply, which is the opposite of how things actually play out in real life.