The thing I think you are missing is that once the feature exists, it can be misused, even if unintentionally by Facebook. A malicious employee could abuse thei

The thing I think you are missing is that once the feature exists, it can be misused, even if unintentionally by Facebook. A malicious employee could abuse their trusted position, a government level actor could intercept the transmission, a hacker could break in and dump them, etc. These are all very real scenarios that have happened before.