Most of the "haters" are just jumping on the Jib Life trollwagon, but those with legitimate concerns about their approach to marketing their product were psyched and hyped about the product for years and years since the project was first announced and are most probably not "kids" anymore.
They've been offered help in promoting the the whole shabang by even the doubting fans who want to see this come into fruition, even with the half-truths and the disappointment of their progress and the ridiculous pledge amount needed for the project to pass.
Now they are going to offer the demo or whatever rail level to those about 300 people who pledged, but they won't see any money. So they are giving it away for free in any case, why not just release a fucking demo? That's what will sell the game, the gameplay, not some Day One DLC product pack with a 'unique' beanie.