If it is truly social then it will spread misinformation like wildfire. That's what people do -- gossip game magnified. That said, maybe Facebook is best when it is just spreading obviously unimportant content (in the sense of national and global affairs), like birthday wishes and cat pictures. No harm if the cat is implicated in wild conspiracy theories.

It's not the cat pic sharing that is paid for by entities with motive and interest in spreading misleading messages.