I don't think that's the issue at all. They have to communicate with each other to some degree. It would be hard not to. And it sounds like she's talking down to them which would bug me as well. She even said as much in her interviews. "they expect me to speak to them as if we're from the same place. That's not going to happen". She needs to be able to relate to all kinds of people if she's going to be designing. She can't just judge who is and isn't affluent or fashion forward based on what she is and how she grew up. I don't think they are deriding affluent people in general-only her because they currently (as of the show's taping) have a personal connection with her.
Wash: "A man walks down the street in that hat, people know he's not afraid of anything."
Jayne: "Da*n straight."
-- my recipes