Ad hominem, also known as argumentum ad hominem (Latin, literally argument against the person), personal attack or you-too argument, involves replying to an argument or assertion by attacking the person presenting the argument or assertion rather than the argument itself. (from Wikipedia).
Saying that the comment "The idea that showing anonymous coffins on a news report would decrease your personal safety in any meaningful way is ludicrous, bordering on paranoia" is sick is considered ad hominem? If so, then the quoted comment certainly would be as well. I don't want dead soldiers either, I say bring the troops home, but we can't because the Iraqi people will tear themselves apart, but parading dead soldiers on TV, for any reason, will never happen. There's too much respect for those who made that sacrifice and the families who have lost a loved one for that to ever occur.