If the user wants to do X which involves increased danger to the user giving users a way to tell the system that app X has the privilege of doing X but not allo

If the user wants to do X which involves increased danger to the user giving users a way to tell the system that app X has the privilege of doing X but not allowing all applications to do X is potentially viable but telling users you don't need to do X anymore is a much harder sale. It needn't be a prompt users will quickly be prompted to click yes to it could easily be an option in settings or at communicated at install time.