I don't know why so many are so invested in that idea that poverty makes you fat.  I mean if you have an Internet connection and time to mess around in Imgur comments sections, then you're probably not one of those super-poor people who allegedly live in food deserts and who have to stuff microwaved burritos in their faces and then collapse into bed as soon as they get home from work because they are so exhausted from being so poor (but then after that they have to get up a bunch of times in the night to suck down more burritos because otherwise they'll get insufficient essential vitamins and minerals from their nutrient-poor food). I don't know whether people like that really exist in large numbers in wealthy countries, but I think they don't have time to practice childish idealism in the depths of Imgur.  So I guess those preachy commenters are defending somebody else, somebody who they probably don't genuinely know or care much about.