It's probably not just fist fighting he's talking about. I see the newer generation is very gay, and weak as well. They don't work out hard, they don't like getting their hands dirty, and they just don't have the toughness. When we were kids, you were outdoors all day playing sports (some of which included boxing) or riding a bike, not playing video games and using gay terms like "eye candy". But, starting a fight was always considered a bad thing.
So, now the army is getting these effeminate girly men, and struggling with it. Society has changed. I don't know if their training can undo a lifetime of laziness and weakness. For some, they need to be challenged physically and their nature will make them accept it, but for many, it might be too much to ask after eating Twinkies and shooting space aliens from a sofa all their lives.
We better start working on killer robots.