As a new member, I don't think it is at all inappropriate to ask MDC to update an outdated stance on a topic that science has clearly and irrefutably proven. As another poster pointed out, while there may have been confusion a decade or two ago, there certainly isn't now, and Maggiore and her daughter's untimely deaths are just another bit of proof.
Second, I agree entirely with NoraFlood above. I am willing to be skeptical and open minded when the evidence supports such open mindedness or when the science itself is unclear. But being a part of a community that even tangentially supports the extremely dangerous belief that HIV does not cause AIDS goes beyond any "alternative" approaches to parenting and enters the realm of conspiracy theories. As a political scientist, I am painfully aware of the incredible harm done in Africa by AIDS deniers and the fact that activists like Maggiore were influential in encouraging some African governments to turn away from scientifically-based treatments to wholly ineffective treatments like garlic (in South Africa, for example), thus causing untold deaths and encouraging the spread of the disease.
Ultimately, I came to Mothering in the first place because, as a pregnant woman, I felt that science didn't support the medicalized version of pregnancy and birth we practice in the West. And I thought this would be a place where science and evidence would trump allegiance to a particular ideology or creed from whatever direction. Peggy's response has only demonstrated that she, at least, does not care about science but in fact holds to ideas that have not only been proven false, but deadly. Like others above, I don't think I'm comfortable participating further (and certainly not supporting, financially or otherwise) such a person or group until a retraction is printed or at least an actual conversation is begun.