I really want a setting for the phone to block all sharing with other systems. No prompt "do you trust?", just a blanket setting that I dont want to trust any s

I really want a setting for the phone to block all sharing with other systems. No prompt "do you trust?", just a blanket setting that I dont want to trust any system. There's no longer any reason to tether the phone back to your Mac for backups or updates, so why is the phone so eager to share data? All of that can be accomplished with iCloud authentication.