Some people spending thousands of dollars on a game that isn't playable. This has all the hallmarks of a bubble and bubbles burst.
I don't mean that if this bombs it will be the end of crowd funding or even the end of big $10M+ projects but a lot of people will be older and wiser. Something shiny by someone well known will still get attention because we're essentially just magpies with wallets but even magpies learn. I guess. I don't know, I didn't think through that metaphor. But in general I think people would become more cautious. Such is the nature of new markets.