Not the secret-poster, but I think I understand where they're coming from. Not necessarily with non-con fic, but in a similar vein... it's always kinda sad when I find a really, really amazing writer who only writes fics that squick me -- not that it's someone else's responsibility to write what I enjoy, but more that I want to read copious amounts of really really awesome writing and can't get through the subject matter. It didn't read to me like she was blaming people for writing rapefic so much as lamenting the fact that she can't enjoy some people's (very well-written) fics.