You see the US DoD's funding of FPS games is a long term plan for when everything on the battlefield is a drone therefore, fitness levels not being a requirement, they'll have the best trained UGV, USV, UAV pilots.
Also I'm pretty sure the foul voice chat practice is going to be such an effective electromagnetic-cyber-psychological cross-domain weapon, it's use will be banned as a warcrime under the Geneva Convention of 2052.