Wrong. Read what I have said up thread. Peters has a direct contract with his donors to produce in return for their donation. If he fails to deliver then it is actionable on the basis of breach of contract, and Kickstarter not only warns donors of risk, but warns project starters of the risk of legal claims. Furthermore, the Kickstarter terms recognise the direct contract, and that relationship is separate from any direct relationship Peters has with Kickstarter or the donors have with Kickstarter.
The Axanar "contract" does say that the studios may refuse to let the project move forward at any time, and this is a risk donors must accept. So wouldn't this exact thing happening undo the "contract" enforceability?