There are lots and lots of things wrong in the world. That fact is absolutely not justification for pissing on an idea that is simple, cheap, effective and has real merit as just one piece of the solution to the large puzzle of deeper problems in the US.
Nutrition has played a very, very large role in my ability to solve my personal problems, raise my income and get off the street. It also has played a very large role in gradually making me more psychologically stable. I didn't say that in my initial comment elsewhere in this discussion because I get tired of being told I talk too much about myself, I am just an attention monger, it is merely anecdotal, etc etc etc. But that is why I had the thought that nutrition in prison could play a very serious role in actual rehabilitation.
If you posit that most people in prison are from generally marginalized and poor populations, you can assume many of them never had proper nutrition at all in their lives. Feeding them well so they can grow both stronger and mentally better could be a small means to make prison a way to break the cycle of poverty and desperation, a small means for society to try to make real amends instead of merely heaping more abuse on such people.
Ideally, I would like to see more non-prison programs that are civilized, civilizing, caring and all that. But those are quite hard to create. It is hard to make good programs.
These people are some of the most ill, most destitute, most crapped on by society. None of your points here in any way whatsoever justifies advocating that they should merely be grateful for their chicken and Fritos and otherwise fuck 'em, they can quit their bitching.
No, the point of prison IS rehabilitation not punishment. It is senseless, stupid and cruel to punish people even if that does not improve their behavior - it helps no one. And prison is not EITHER punishment OR rehab, its a mix, and the more we move it towards rehab the better it is for everyone.
Besides, your argument is "oh some people in Africa can't eat chicken, so what the fuck is anyone complaining about?" is ridiculous. Some people don't get vaccinations, healthcare, shelter either so by that logic why don't we just throw all the prisoners onto an island huh?
Prisoners are people, not subhuman trash to be discarded as you would like.