Now, I know a lot of the people involved and am totally skeptical about all this, but think your post should clarify one thing. Your post says that it lets you keep the money if the project goes bust, but the comment you link to as evidence says you get to keep the money if you don't reach your goal- meaning don't raise the entire sum of money. Those are two very different things. There's nothing unethical about trying to limp along on partial funding.