Nobody at Facebook fact checked stories and just spread them. Fake news sites are popping up all over and being shared on Facebook.
We reported on fake news sites here:
We try to report on news items that are real. We might use humor and Poe’s law sometimes for entertainment values, but we try to have a kernel of truth at least in stories. We report what we know as the truth.
Facebook must be using some sort of AI algorithm to screen stories that is being fooled by these fake news sites. It reminds me of the old site Kuro5hin and the trolls making fake news and stories there.