I first read that article a while ago, and was taken in until I read some other articles on the site. It does sound plausible to me that such a robot might be built someday and go wrong in a similar fashion. I'm neither upvoting nor downvoting the OP because I think the article is interesting a) as a test of rationality/skepticism, and b) as a simple expression of Friendly AI concepts that are worth discussing, as a thought experiment at least.