Sure, I'd be okay with receiving a 5-second call from the FBI or from a family member assisting with an FBI case in the case of a missing person report in my ar

Sure, I'd be okay with receiving a 5-second call from the FBI or from a family member assisting with an FBI case in the case of a missing person report in my area - who wouldn't. You imply there are many calls like that (you write "Would you like to be the receiver of many robocalls?") but this is the only such case at the moment.