I think that video game addiction does have some impact on violent tendencies. I don't know if this is aimed at showing statistics that video game players are more likely to be violent, or that they are 'corruptive.' I can think of many people who play video games all the time, but they are just underachievers. It's only when they fail school and would struggle to get by when the addiction would lead to them becoming desperate.
But that might happen because parents don't enforce their children as much, or poor education standards, or many other things besides video games.