It's the combination that's problematic. It suggests that the killing is done lightly and carelessly, and it cheapens human lives.
"Oh and look at how the military is using these hacker kids with neck beards who part-time as assassins in between their Battlefield 3 matches"
I guess this guy (and apparently you too) would feel better if this guy was wearing a 3-piece suit before he launches a hellfire missile into a Taliban camp.