I did believe in her product. What I didn't believe in was an utter lack of regard to KS backers, poor communication, misdirections, a publishing contract with Macmillan, a late delivery (while being less than truthful with KS about it).
The author bears some responsibility for changing my mind from believing in her product (what you call helping, "someone realise their product") to simply just wanting the end result of what I paid for at a higher cost than retail.
