Doesn't that highlight a pretty broad dichotomy between what users are paying for and what they think they're paying for? As far as my understanding go, you fund something in the hope for an outcome (a clock, say), you don't place an order.
Kickstarter's T&Cs clearly set the expectation that you are placing an order. For example:
Project Creators are required to fulfill all rewards of their successful fundraising campaigns or refund any Backer whose reward they do not or cannot fulfill.
However, the issue is between the customer and the project creator as Kickstarter conveniently extricates themselves from the situation in the T&Cs (and chargebacks could be difficult since the payment is going through Amazon and Kickstarter who may not have violated the contract).
But if backers start feeling like KS is a place to take money and never deliver while KS itself turns a blind eye, they'll just slowly bleed credibility.
But what do I know. People still buy laptops on eBay, they still get scammed, eBay still refuses to do much about it. eBay still exists.