While that statement is objectively true, the fact remains that Facebook amplifies and benefits from sensational posts.
They are in a position to moderate the worst impacts of mis-information and yet consistently appear to be falling short.
While I agree that parts of society is to blame for the online toxicity online, FB (and other social media companies) are certainly in position to do a better job of managing some of the worst impacts such as vaccine hesitancy and political mis-information.
Infact they appear to be reluctant to act on it, since sensational posts and controversial topics appear to encourage attention.