If CNN reports say stock prices, I believe them. If they report some preprints, I believe they exist. Much of what they report is simply factual information.
Far too much is not, IMHO, but it's easy to spot. They've taken to labeling OPINION as "ANALYSIS", which is really opinion.
But I personally won't discount a factual report from CNN just because it's CNN, or anyone else, any more than I will denigrate preprints because they have yet to be peer reviewed. It's information, it may be flawed, but it's information.
What too many do is disdain information they don't agree with, and latch on to sketchiness that they do believe.