No, not in cases like this, given that most judges would pierce the veil in cases involving bad actors. However, given that a precedent for suing a failed Kickstarter was just set, it makes a ton of sense to form an LLC before doing a Kickstarter now, since funders may not make rational decisions about whether to sue or not if they don't get their rewards.

I would argue the precedent is now set for "bad kickstarters" not just "failed kickstarters", but ok.