You're thinking like a technical person. Aunt Susan doesn't know her phone is an Android phone. In her mind, it's a Samsung phone. It's not a question of not caring, she simply doesn't know.
There is such a thing as not knowing because you don't care, and I wouldn't even say that it's irrational. There's simply too much to know and care about in the world, so you have to be selective and event driven.
