I've always said to my friends and family that games are cheaper than crack and better for you, but that makes it no less a personal drug. Still, I've never had the urge to steal a TV and sell it so I could get a momentary game fix.
Anything can be an addiction, really. I'm sure if I took away one of my housemate's access to Pepsi (which they drink like water no longer exists), they'd flip out and go into withdrawal.
And I wager if you sneak up to your child playing with a favorite toy and take that toy out of their hands with no rhyme or reason, they'd go nuts regardless if it were a video game, barbie doll, paint brush, collector's cards or something else they were intensely concentrating on at the time. It's just plain rude and disruptive.
I bet this guy's addicted to all the attention he's getting from the well-meaning but naive parents who are clinging to his scare tactics.