The suggesting in the article was not to keep it on the parents’ phones, but to put a copy in the car’s glove compartment. That’s what I thought was silly. My pediatrician told me not to bother giving a POA to the daycare/after school care or even listing the doctor’s/dentist’s numbers on a medical forms. She said she’d seen too many times when after an accident at the school the care providers look for the forms, waste time calling the doctor’s office, calling parents, etc. She said to write on the forms Call 911 instead of putting the doctor’s numbers on the form because she couldn’t do anything anyway.
If the example of the kid playing soccer and needing to go to the ER, the kid is either unconscious and the ER will treat her or she’s conscious and she’ll either be able to give permision to talk to the parents or agree to her own treatment.