A key point is that the creator of a project has a legal obligation to the people who back the project on Kickstarter. Unsatisfied backers can potentially take legal action against a creator who raised funds but never produced the product. This isn’t new, it is simply being pointed out in an extremely clear way.
They are also going to be held accountable in other ways. Creators who are unable to complete their project must post an update that explains what work has been completed, how the funds were used, and what prevents them from finishing the project as planned. Other requirements include being able to demonstrate that they used the funds appropriately and that they made every reasonable effort to complete the project on time. This would be helpful in situations where a person had something tragic and unexpected happen that prevented them from finishing the project.