Ok, aren't you putting words into the mouths of both Rebecca and Carrie. I don't remember either saying they were persecuted or ostracised. Just that they would like to see more women and minorities. So would I.
I think the comment you are referencing was specifically referencing a response by the women to Steve's question, "Do you think there is any lingering sexism within skepticism itself?"
The response was, "I think there definitely is."
Then to Steve's question, "Do you think you've been held back in any way?"
"It's a much quieter, slightly more insidious kind of sexism."
What is sexism if not persecution and ostracism?