This restriction is one of the strongest data protection provisions in the document, protecting users from having their Facebook and Instagram data monetized or used to track them by apps they give permission to — but enforcement depends entirely on Meta's auditing capabilities.
Meta's Platform Terms directly affect consumers because they determine what third-party apps and developers can do with personal data obtained from Facebook or Instagram, including profile information, friend lists, and activity data. The terms prohibit developers from selling platform data or using it for surveillance, but enforcement depends on developer compliance rather than Meta directly protecting users. You can review and remove third-party apps that have access to your Facebook account by visiting Facebook Settings, then 'Apps and Websites', to revoke permissions for any app you no longer trust or use.