but they're a tiny, tiny majority of Apple buyers in real life.
I thought Apple had a huge number of people who buy their products. If that is the case, how can the majority of them be "tiny, tiny"?
No, you've taken that quote out of context. It was referring to "the Apple posse" being a small number. Most of Apple's customers are not die-hard fans, just regular people who want to stay hip with the latest phone or technology fashion.