That article does not even mention Second Life. It mentions WoW and Star Wars online in the last paragraph.
While I probably wouldn't blame that persons problems on the existence of games, it might be worth noting that MMORPGs like WoW are very different from Second Life. Todays MMORPGs are optimized for addictiveness - they have fine tuned challenges and rewards to make people play as long as possible (even the guild system apparently plays a part - if your friends play, you are also more likely to play).
In contrast to that, Second Life is not even really a game. It has no goals, no challenges, other than what you set up for yourself. So blaming SL for the damage MMORPGs have supposedly done to some people is misguided.
I ended up pasting the wrong link. I won't post others, as I said, the stories are too personal. If anyone is interested enough, they'll find them. Suffice to say that I have personally talked to people whose lives have been devastated by SL and they were powerless over it.
Edit: Removed link to article about the wrong game (duh me).