This may work if Facebook were just a dumb hoster of content. The algorithm promotes content and sends notification in an attempt to generate ad revenue, eyballs and 'engagement'. This is less about censorship. Facebook is not neutral. Since they make this choice of spreading content they should be responsible for its effects. In economics, we call these externalities. Facebook is not paying the spread of misinformation, manipulation or genocide it helps enable (see Myanmar). Asking them to safeguard the platform is just asking them to take responsibility for what their algorithm recommends.