Aren't these platforms meant to protect against this kind of scam?
[1] https://help.kickstarter.com/hc/en-us/articles/115005048173-...
An airplane can reduce the risk of falling down, but if you want to be protected(!) against falling down from the sky you shouldn't enter a big piece of metal that lifts off from the ground.
Indiegogo seems to not have such statistical intelligence.
The fact that a house-fly already has the statistical intelligence for funding Indiegogo projects doesn't mean that there isn't any