Why this is not a setting in admin, I do not know. Four or more years ago, a few us griped about privacy settings, and how they should work, and it remains something Boonex has never got quite right. It makes perfect sense for the site admin to be able. This very issue came up numerous times, and there were tickets like this one.
That ticket was for an early beta version of 7.0 Privacy settings, and overall sensibility thereof, remain something that still needs a bit of work even after all these years have gone by. One thing that drives me insane is that ridiculous member_privacy.php page with all those drop down selector lists... it's absolutely maddening. It would be more palatable if all those privacy settings were presented in a grid format with checkboxs.
But yeah, I agree.... it makes sense to have control over this.
My opinions expressed on this site, in no way represent those of Boonex or Boonex employees.