One of the biggest problems with social media is the fact that social media companies are financially incentivized to keep the public at large from knowing. Twitter has long refused to answer exactly how many of its users are bots as a percentage of its user base, Facebook did the absolute bare minimum in cooperating with Senate Intelligence in 2017 relating to Russian propaganda, etc.
Kara Swisher said it best in an interview with Preet Bharara around the time of the Russian propaganda scandal: "The Russians didn't hack into Facebook and manipulate its servers. They were users of Facebook, they were users of Twitter. They used these platforms exactly the way they were designed to be used."