Sadly, I don't think Kickstarter has any kind of legal expectations or promise when you hand over money. It isn't as if these people were buying a share in something.
It's like suing a homeless person when they buy beer with the money you gave them even though their sign specifically said they wouldn't.
Stories like this just make me really think about all sorts of Kickstarter scams I could start.
It does say in the rules of Kickstarter that are clearly circled toward the bottom of the photo, no tuition, no open ended projects, no "I wanna buy this" stuff.