Kickstarter's purpose, like any other company's purpose, is to serve a market. The market responded by showing large demand for these kind of projects that are being funded. If these are the kind of projects that people crave, how is that Kickstarter's fault? What do you suggest they do about it? Should they exclude these kind of projects? If so, why? Should they shut down the company? If someone credibly promised a crowd-funded cancer cure, I'm sure there'd be even bigger demand for that, but obviously that kind of thing is really hard to crowdsource.

I'm also confused: what exactly do you even mean when you say these products are useless? They may be useless to you, but clearly, hundreds of thousands (possibly millions once they reach market) of people are clamoring to get their hands on this stuff.