Would you do it if they were reading comic books about war? Watching movies? Watching 50s movies with John Wayne about war? Reading novels about war? Playing war in the yard? If they started playing cops and robbers in the back yard with the neighbor kids, is it time to haul them off to a Scared Straight session at a prison, to impress upon them the harsh realities of a life of crime?
This whole story is a tale of over-reaction that only seemed to have occurred, because "oh my god, video games!".
Wanting to expose your children to realities beyond those as depicted by popular media is a thoughtful thing to do. Not so much when it's a swift over-reaction to "OMG VIDEO GAMES!".
And, really, the truth seems more to be "freelance journalist does a freelance journalist thing and uses his kids as fodder for more freelance journalism". What do you figure the odds are he'd be doing this and documenting it if, say, he were a flight mechanic or a plumber and there weren't some other benefit besides that to his children?