Video Games Make Society Less Violent

So this article is kind've controversial to me. Usually the claim is that video games raise violence in society. this article, however, claims that video games reduce violence. i understand that games are just games and thats it. my belief is that the only people who are influenced by a video game are either mentally unstable or they are not age appropriate for the game. obviously a mature rated game is going to affect a 8 year old differently than a 40 year old. so my belief is that if the age ratings are followed that violence can be reduced, but when the age rating is abused violence may go up. when a age appropriate, mentally stable person plays a violent game i think it gives them a chance to have fun and take their frustration out on an inatimate object. when people watch violent movies they are not in control at all and it inadvertantly makes them angry, but when they can control the situation like in a game it relieves stress.