This article seems to me to completely overdramatize the issue, by saying that there is something pyschologically wrong with people who enjoy these games. If you class them as abnormal, then that's a rather alarming percentage (how many people play Everquest regularly, not even considering DAoC, Diablo 2, Ultima Online etc).
Essentially what I'm asking here is do you think computer games can be classed on a similar level to drugs, as the above article suggests, and is the social abnormality discussed any different from a bunch of yobs getting pissed and smashing a few shop windows (although a little quieter).