Is this a situation where better safe than sorry is the best approach? I know they had some issues with a Samsung phone model before, think they banned those from planes as well if memory serves me. I personally think if I were the airline I would take the safe approach and do what they are doing, ban models that could be a hazard. If anything were to happen mid-flight it could be disastrous or at least make for a very unenjoyable experience for fliers with that airline. I know I would feel pretty freaked out if something caught on fire mid flight and might lead me to look for other airlines in the future.
“If you are neutral in situations of injustice, you have chosen the side of the oppressor. If an elephant has its foot on the tail of a mouse and you say that you are neutral, the mouse will not appreciate your neutrality.” Bishop Desmond Tutu