What a great article. First it gave me a fascinating introduction to an approach I had never heard of before, and then it got me worried about it.
One point that they didn't touch on is that one of the points of maintaining biological diversity must surely to be to maintain a diversity of behaviour. If we start to conserve wildlife by changing their behaviour, there's a danger that we start to favour working with species who are amenable to this approach. Imagine a future where biodiversity consists of an extraordinary range of breeds of canids, pigeons and rats!