Of courseRight. If Apple found that iPhones were blowing up in large quantities, it would do the same thing Samsung is doing. There's no use in saying "Apple would say 'you're holding it wrong"' because using a couple of bars is not the same as a phone burning someone.
They would do what any respectable company would do. I bet these phones that are being set on fire have been charged by 3rd party chargers. However saying this on fast charging my edge uses to get very warm so i guess it's possible