I don't disbelieve your story, just would not mind other people confirming that such things are real.
I think you could simply rob the drug store and demand insulin. If they (jury) sent you to prison then insulin would be free, so it's a win-win situation.
I can certainly confirm the part about the insulin. My daughter is Type 1. When she was diagnosed, we were fortunate and had very good insurance. Then we lost that insurance due to divorce. There was a relatively short gap, but then I was able to get her on Florida Kid's Care (Thank you Hillary Clinton!). She aged out of that program at 19, so she was without insurance again for a few years. At that time, all the money in the world could not obtain health insurance for her because she had a "pre-existing condition". Of course, if we had all the money in the world, we wouldn't need health insurance, but we were your typical not rich single mom with a child in college. Then ACA passed, and I was able to get my daughter onto my health insurance plan through my job for about a year, and now she qualifies for her own health care plan through the Affordable Care Act (Thank you President Obama!) She makes just enough money to qualify for the federal subsidies. If she made any less, she would have gotten nothing because Florida is one of the states that refused the expanded Medicaid program. (Fuck you Rick Scott!)
During all of the time periods where she had insurance, getting the two types of insulin she needs to stay alive was not a problem. Neither were routine doctor appointments. Other stuff got really dicey. There was the time under Florida Kids Care where they approved her braces for medical reasons, then changed insurance companies without warning and the new company revoked the approval. But, we were still glad to have her diabetic care covered.
Contrast this with the periods when she did not have health care coverage... like Tantric, the ER was a very frequent source of medical attention and insulin. The problem is that she had to be in ketoacidosis, which is life-threatening. As Tantric experienced, we often had the nurses sneak us the partially used vials of insulin to help us out. By law, they are supposed to dispose of them and they risked their jobs doing it, but I am grateful to this day for their covert acts of kindness.
My daughter also entered two different insulin studies for the sole purpose of getting her insulin and medical care free through the studies. We were fortunate to live in a big city with a big diabetes research hospital right here. This option would not have been available to someone living in a small town.
Eventually, we discovered that some pharmacies will sell generic brands of one of her insulins without a prescription for a relatively low price. This did not cover the other insulin or the syringes or anything else, but it helped.
We also ordered virtually every freebie blood testing meter in existence. The glucose meter companies will give you a free meter that includes a 1 month supply of test strips. They do this on the assumption that you will then buy future supplies of test strips from them, and we did that too. By having every kind of meter, we were able to shop sales/discounts for the test strips, including the deeply discounted almost expired test strips.
When she was getting close to 19 and we knew she would be without insurance after that, a friendly doctor prescribed a bit more than she actually needed of everything (syringes, test strips, even insulin), and we stock-piled the extra. This helped her get through most of the first year without healthcare insurance.
So yes, I can definitely corroborate Tantric's experiences of being uninsured/uninsurable with diabetes in the USA.