Well, "evil" is fairly subjective and often times depends on what side of the table you are on, as I think he points out in the article.

As for specific reasons why they could be viewed as such, there are plenty out there already. Here's an AMA with a previous engineer that doesn't paint a pretty picture:

http://www.reddit.com/r/IAmA/comments/pc6j9/iama_former_full...