That's the case with individuals getting into business this way. I was address the case where a major company goes the kickstarter route. The latest offer from PeachTree is one for their $219 speakers. I don't have any worry that they can make that product and support it as if they had funded it themselves.
Outside of that I fully agree. Lots and lots of scammers and people who don't know what they are doing are in kickstarter offers. It is a huge gamble to do business with them. I have only bought one kickstart product and it was a high-efficiency, small laptop power supply ("Finsix"). Despite having a fully working prototype at CES 2014, and funding by Siemens, and being designed by MIT engineers, it took them 18 more months to ship a working product.