In my mind fake news and biased news are two different concepts. All news should be taken with skepticism, because every bit of it from every news outlet is subject to potential bias. I'm aware that many news outlets published biased news against Sanders (and Trump and Clinton), and I'm aware that Bezos owns media outlets that may be biased. But organizations that employ fact checkers don't make up news stories out of thin air.
So making a political candidate seem like he said and meant things that he didn't isn't "fake"? I'm afraid your definition of what is fake and what is not is arbitrary and vague. And no, you don't get an "A" for effort with supposed fact checkers - all that matters is the final product.
