It seems to me that this article is mostly about cleverness rather than intelligence. In the same way as IQ can be abused then EQ can be. Except that if someone is truly emotionally intelligent they would experience the feelings of guilt associated with behaviour that lacks integrity and (being emotionally intelligent) have the tools to change the behaviour by looking at the drivers of that behaviour.
EQ is first and foremost a personal development ability that lends itself to creating grater levels of satisfaction with life and (or as a result of) better relationships. It is not my idea of emotional intelligence to go around analysing others though we may be afforded helpful insights into how we can support others.
I have spent 20 years in this field, working on myself and supporting others through coaching and workshops, no one truly enjoys being the "bad guy" when they are courageous enough to experience the deeper emotions associated with that role.