Creators are responsible for their projects. When you back a project, you’re trusting the creator to do a good job, so if you don’t know them personally or by reputation, do a little research first. Kickstarter doesn’t evaluate a project’s claims, resolve disputes, or offer refunds — backers decide what’s worth funding and what’s not.
Some projects won’t go as planned. Even with a creator’s best efforts, a project may not work out the way everyone hopes. Kickstarter creators have a remarkable track record, but nothing’s guaranteed. Keep this in mind when you back a project.
An investment is a risk-based transaction. Donating to Kickstarter technically qualifies, but what do you get in exchange for your money? Not an ownership stake, which is what a stock offers. Not a 'financial product', which has largely always been against Kickstarters terms and conditions.
You get a 'Backers Pledge'. And I have yet to see any legal case that would demonstrate that is anything other than charity. Any scammer worth their salt should be able to mount a legal 'reasonable effort' defense that would stand up on court.