Actually, I do.
Quite a few projects on Kickstarter have promised this and that. People invest their money, the project goes under...the people get nothing.
Is it no some rare occurrence on Kickstarter. Do you really think this movie is going to be a box office hit? In order to be a success they need to make more than they put into the film.
What if Warner Bros decides they no longer want to back this movie? Then what?
All those little prizes you got promised cost money to produce.
I don't give to anything on Kickstarter because of it.
Unlike something funded by Warner with tens or hundreds of millions of dollars, this movie doesn't need to be a box office hit to succeed as evidenced by the piles of straight to video stuff out there. Veronica Mars is a character-driven show that's not exactly a sci-fi spectacle loaded with special effects, intricate sets or an expensive cast.
There is absolutely risk in putting money into any Kickstarter project whether it's a movie, a game or a physical product. The same way I would trust a very small handful of game developers with Kickstarter money (e.g., Double Fine Games), you have Veronica Mars' original showrunner and a good chunk of the original cast behind this so it's not like this is some fly-by-night operation trying to capitalize on the fandom with little chance of succeeding (see Civitas for an example of that).