I'm not saying what is wrong or right, but I do think the snake is well past saving. If anyone does manage to get it to eat, it will likely go into shock and die. It looks small enough to have never had a meal in its' life. If you plan to spend money buying the snake just be aware that death is a very real possibility even if you get it to eat.
One thing I think everyone needs to keep in perspective is that reptiles will refuse to eat and starve to death. If you put a cat or a dog in a tiny cramped metal cage they will still eat. Their will to survive enormously outweighs their want/need for a nicer place to live. If you don't have the husbandry correct for a bp, as in this case, it will definitely starve to death and it will appear to be by its' own choosing. I really think that's why authorities/rescue groups tend to let stuff like this slide. People don't expect an animal to "choose starvation" when they are offered food, water, and shelter. And lets face it, most people don't have a clue about reptiles, even in rescue groups. Although it is a living creature, and it is terrible that the snake is starving to death, this case is more about lack of education than deliberate neglect. Yes it's frustrating, yes it's upsetting, but the only thing we can do is continue to educate people. Being mean/threatening will not help our cause.