I hands down agree with you Tezz, and besides that, several controversial industries advertise to people at a young age, but you will no doubt finding people complain about those more or less. The military is a necessary evil whether we like it or not, someone has to defend the country and the discipline involved in it isn't exactly a bad thing, losses are of course expected to be had, but it is nowhere near as bad it was in World War II.
A video game is simply what it is called, a game with a graphical user interface, the message people get from it is open to interpretation. Whether the military puts its label on it or not as with Call of Duty: Modern Warfare 2, it's still no different than any other war game. Then even if mommy and daddy tell their children to not play a game, it sure doesn't stop them from thinking about it or going and playing it anyways, everyone makes their own choices whether or not people advertise games.
The press have a way of exaggerating things as well, they will do whatever it takes to make their ratings go up by making something seem hyped up as much as possible. In this situation for example they focus on the teenager age group hoping to stimulate a reaction from parents and then encourage them to prevent their teens from participating in playing the game.