You’re not committing to a purchase though, there is some inherent risk in a kickstarter that they won’t deliver. And there is very little mechanism to chase them (usually they have either done a runner or gone belly up)
So this is an interesting case, because the company is still around, and especially so as the poor guy is suffering MS and so has a more time limited domain to see a reward
indeed in most cases where kickstarters don't deliver by such wide margins the company is long gone.
This one is probably on older Kickstarter T&Cs so it'd be harder to get money back. In more recent times Kickstarter have tried to toughen up a little after early failures like ZioneyeZ
