Its not a negative light, its not any light. What is being said is that we could not expect something to be true without evidence. She has said she wants to do some really big and complex things. Politicians have a habit of offering things they cannot or will not actually give. I think its perfectly rational to question claims and offers by politicians and to look for evidence that its not only possible, but that the person can follow though with it.
What you are saying is to elect whomever has the biggest and best claim, without evidence, and then to wait and see if they follow through. You do see the long term problem with that right?