Is anyone arguing that mere accusations should result in kickstarter takedowns? You make a good point... just a sort of obvious one.
This is clearly a hard problem, and neither extreme of "proof beyond reasonable doubt" or "accusation = takedown" works. Maybe that's why this space is so unexplored! That doesn't absolve Kickstarter from having to discover the palatable middle ground.
Hard work is hard, and I think today's announcements are part of that hard work. So I say: keep it up, Kickstarter!