Ok, and the data is in a location that you need to grant full disk access to an application in order to access it. So what is the complaint here? Is it that if you run an application and give it access to the data that it has access to the data?
If an app needs to read the local social graph it should ask for a permission to THAT folder (or a slightly more general "read social graph data", like we have "read Reminders data"). Not bloddy full disk access or bust.