Michael,
I'm a bit disappointed by this article. While you provide information regarding the privacy of Cortana and the FAQ, the article is pretty skewed against Microsoft and on the side of privacy conservation. The way the article was written feels more like a op-ed rather than news/information. You're right that Cortana does ask for a lot of personal information, and connects to essentially all aspects of your Microsoft account, but there are many ways to side step the data collection or simply turn it off. Microsoft is straight forward about this, and I think that is a positive thing, rather than negative. Many companies try and whisper the fact rather than place it right in front of you, so I commend Microsoft for that, even if they are asking for a lot. Some other users have mentioned that the benefits come with a compromise, and that's certainly true. If you want Cortana to be able to be as effective as it can be, it has to collect more information. Again, that's all fairly customizable to your tastes in terms of privacy. This Imgur post talks a lot about the privacy concerns and how its often been skewed against Microsoft:
http://imgur.com/t/windows_10/oQDnY
While that post is targeted at a slightly different type of article, it applies more or less in the same way. An article discussing how to adjust the privacy settings for those concerned would have been a better quality article (in my opinion). This seems to belong in the op-ed section.