This reminds me of a book, in which I cannot remember the author's name, but she titled it, "Toxic People".
I was furious when glancing over it at the book store, when I came upon her statement, "bipolar people are toxic", I wanted to write to her, even started to but then through out my letter, realizing it wouldn't matter to her what my opinion was on her statement.
Unfortunately, statements that people make about people's mental illness come from their ignorance, their opinions they feel are right, or even lack of education on mental illness.
I have a nephew who is schizophrenic, and he is extremely creative.
It's been years since I read her books, so forgive me for forgetting this statement she made, I can understand your annoyance with her, on the other hand, she has written some informative stuff.
It's ashame when famous writers lose touch, and start stereotyping the very thing(s) they claim they want to help people stop doing, such as stereotyping and stigmatizing.
If it's any consolation, I feel many of us believe and know her statement was wrong.
I don't know what writing her about this will do, other than allow you to vent to her, for she seemed she already made her statement and she believes in it.
I'm sure she must have recieved more complaints about this from others, it would be interesting to know what her replies were and if she ever did personally reply,eh?
I'm sorry to hear she has upset you and others, dealing with this disorder, I guess she has become a legend in her own mind. (sarcasm,of course)
Phil, take care and know that her statement was flawed and that creativity is a gift, and shouldn't be determined by a disorder(s).