I don't think she is a stoic or particularly bothered by rich people using it. She is a historian and this is a topic that overlaps with her area of study.

Apologies for the assumption. (Edited).

She said: "I personally love stoicism. It’s gorgeous. It’s brilliant." Maybe that doesn't make her a stoic, but it still struck me as ironic that she seemed wary of rich people using it, that's all.