First off, where would they charge it?
In this scenario, people are undoubtedly using the phone as a torch and now they want a radio, so if Apple provides an app to overclock the internals, we can fry up some sausages on the screen too, cos phones have the capability to overheat. What a stupid idea, why are smartphones the thing everyone turns to to solve all of life's problems nowadays? What happened to smartpeople? With the chance of sounding like my grandparents generation, what did people do before smartphones, how did we survive?
Fair enough, if Apple develop that side of the antennae as a feature for people to listen to FM, but requesting it as a safety feature is a joke.
How about if you live in a hurricane area, and can afford a $700+ phone, you spend $50 on an friggin' FM radio and torch and stop expecting everyone else to come up with a solution to nature?