Some rotten apples have definitely left a stink, that's for sure. Right now, though, we're really at the leading edge of what Kickstarter is and what it can be. Some of these games [like Wasteland 2 and Project Eternity] simply would not, and might never, exist if not for the funding they were able to get. Maybe things get worse and it all collapses because people get tired of wasting their money, or maybe the site, the community, and developers finally get all the wrinkles ironed out and this continues to be a viable way for money to be raised for projects that big publishing houses don't care about.
I think it's ultimately going to be defined by what's able to get released through Kickstarter funds next year, as that's when a lot of the bigger games are supposed to come out. Peter Molyneaux trolling for money or a guy who blew through all his funds on things other than his game will ultimately end up being footnotes either way.