Social media is built around folks connecting with one another and sharing information about their lives. One giant in this space, Facebook, actually defined how people learn about each other and how much of themselves they reveal online.
The downside of putting everything out there for the world to see could be a slow erosion of privacy, which is why Meta introduced more safety features, including vanishing messages in Messenger chat. Although this gave folks more control over their texts, Mark Zuckerberg later added another safeguard that shocked many users.