> Abusers often use phone apps to track their victims. If you are in an abusive relationship, you may be too scared to turn off Find My Friends. If the phone was actually on your side, you would be able to enter a fake location, and your abuser wouldn't have to know that you visited your parents on your way home from work.

This exact same feature you are asking for would be useful for people abducting children, who could make it look like the child was still at school while they took them away.

This is far more likely to be why Apple hasn’t implemented it.