I don't think that's fair. In my opinion the members of this forums speak more often about Charlotte endeavours (philosophie, horse riding, etc) that about her looks.
However, I don't think there is anything wrong about talking about the way she dresses or her beauty when she herself promotes that side of her by attending fashion shows or appearing in fashion magazines showing herself off or promoting make up.
It is not as if she was a career woman who didn't have links with the beauty industry. In that case I would find sexist to focus on her looks in such a way.
But it is not Charlotte's case.
She makes money out of her looks. She's been acceting covers on fashion magazines for ever, even when she didn't have anything to talk about. And she's been making money from promoting make up and clothes for ages, only on the base of her pretty face and family conections.
She's not been offered those contracts because of what's she's done, but because of who her family is and how she looks. She knows it and she accepts it. So, I think that it is perfectly fair that we talk about her looks as long as we do it in a respectful way.
About her writing... Well, I can't talk much since I haven't read the book. I've read, though, some philosophical texts she's published in magazines, some time ago, and I can say that I didn't like it at all. It was pretentious, confusing, and badly written, so, based on that, I dont' feel like spending a single sou on her book even if the Maggiori bits are probably very good.
It's the same thing when she speaks. Whenever she's given an interview alongside Maggiori you can see all she's lacking and why she's still not ready to write a book. Maybe in the future, but not now.
When you listen to Maggiori, you understand everything he's saying. He is a prestigious philosopher, a doctor, someone who can manage as many references as he wants, and still he is clear, didactic, he reaches you, he manages to say a lot in an understandable way. When you listen to Charlotte, you feel that she doesn't say anything. She is always pretentious, she speaks throught high concepts, she's extremely theoretical, exactly like a student who wants to show off in front of her teacher and boast about all her reading. But everything she says sounds void, far away from real life, too intelecual and learned by heart, not elaborated on her own.
That's why I am not interesed in what she has to say. I've never heard her say anything remotely interesting as yet.
Also, I think that having her debating with Maggiori spoils the purpose of the book. I love the idea of a book about passions. And I would have loved to read Maggiori debating about it with someone of his own intellectual level. But with someone who did ONE year of Philosophy and that's all? Any real philo graduate with a maîtrisse could probably do better. At least she would have bottered to finish her studies and write a mémoire de recherche (an original research work). Charlotte hasn't even been able to do that.
I can understand the point of the book if it is done in a dialectical way, like the books of the greek philophers. If Charlotte's voice is used in that way, the thing may be not that bad. But if I have to read 300 pages full of long paragraphs of her confusing and theoretical blablabla, I pass.