Interesting. Was this a recent policy change? Control VR never showed any working prototypes either, and their campaign was allowed (this was in 2014). Their demonstration video was later revealed to be using another company's significantly more expensive product ($10k+ vs the $600 pledge price), with zero modifications. They never demonstrated any prototypes of the product they were claiming to develop themselves, yet the campaign went through and now they have everyone's money (>$400k) without delivering.
not everyones, just the suckers. Yes, we are at a point you are a sucker if you buy into crowdfunding without doing due diligence. Batterizer, MuOptics, Soap router, they all had signs of being scams from the start, but still managed to defraud people for over a $1mil.
But it is currently in beta and doesn't include Kickstarter.