Well yeah -- video games do inspire some people to think crazy things, as do movies, as to TV shows, and as do some artists people listen to.
But you can't blame the people behind them for it. A director of a horror movie doesn't intend for people to be inspired by it and go on killing sprees, an artist who raps about gangs doesn't intend for people to be inspired to join gangs. People need to take responsibility for their actions.