I find it very interesting to see how ideas important to us in the free software community spread outside of it. Karen's work on the dangers of proprietary software in medical devices is exactly the sort of concrete, quite easy to understand thing which spreads widely, and it's very useful and interesting to see how it does.
The site hosting the article may well have lots of articles that most of us find dangerous, but that doesn't diminish from the good of seeing how somewhat shared interests are represented there.
And yes, 'natural' is a particularly overloaded term. In my circles, in England, using the term natural in relation to health or medicine is generally going to refer to this sort of 'alternative medicine' stuff. I suspect it varies a great deal according to location and social circle.