Many people were never taught this stuff and the world does not exactly go out of its way to make it obvious how to play the food game properly. All the advertising and all the media point you to inefficient purchases. And really, I guess most poor people are doing exactly what I talked about -- buying and eating efficiently. It's the counterexamples that make the news.
Also FWIW I'm not saying it's easy to be poor. In many domains it's extremely painful and difficult. But I think we can acknowledge that while also pointing out that meeting food needs using $500 of SNAP benefits is an eminently doable challenge.
I agree regarding obviousness, marketing, difficulties of poverty, and doable challenges. I'm not convinced about "most poor people" and exceptions making the news. I've lived in several very poor communities in several parts of the US, and observed widespread cultural norms undermining the very ideas of cost efficiency and self restraint.
I realize I'm too ignorant to confidently propose systemic solutions, but on the education front I do wonder if it would help to offer government financed courses in shopping and budgeting (along with nutrition) bundled with SNAP benefits.
I too would be interested in empirical research about the efficiency of existing purchase patterns by people with limited means, and, to the extent they are inefficient, research into interventions that might improve things.
Also FWIW I'm not saying it's easy to be poor. In many domains it's extremely painful and difficult. But I think we can acknowledge that while also pointing out that meeting food needs using $500 of SNAP benefits is an eminently doable challenge.