Yes...I find it offensive.
However I also found it offensive when I read an editorial by a woman about the "Invisible Women Firefighters of Ground Zero." The complaint: women firefighters worked alongside male firefighters, and they got no recognition for the work they did.
343 Firefighters died at the WTC on 9/11, and I didn't find one woman on the list...yet in that article, women find it distressing that the term "firemen" was being used???? In the aftermath of the rescue effort, more died...including 4 women...and the article made a point of hammering that home!
I have no objections to women being firefighters...and indeed, if there are male firefighters who are harassing them or slashing the tires of other firefighters who support these women's efforts to become firefighters, then I think they need to be dealt with!
However considering the fact that "Deadbeat Dad" "GunMAN/MEN" and "MadMAN" are still commonly thrown around in the media, and considering the fact that, even if you factored those four female casualties in with the 343 Firefighters, it still amounts to men (who I guarantee you in 2001 did not account for 99% of all firefighters) comprising between 99% and 100% of the fatalities!
The point I am making is this: while it's obvious that women who find humor in men being mutilated are offensive...so too is it offensive, in the aftermath of a tragedy like 9/11 when so many of the rescuers who died were men, for women to whine about how their gender feels slighted because they didn't get equal acclaim!
It's offensive to whine about how you don't like that the term "fireman" is being used when in fact all of the FIREMEN who were killed trying to rescue others on 9/11 were in fact MEN! It's offensive that when something heroic is done by a man, it is hidden with gender neutral terms...while so many of the feminists on Yahoo Answers are more than willing to jump in and point the finger at men as a group when some men do wrong!
If it's not important to change the lingo for "madman/men," "gunman/men" or if it's not important to call out women who do not support their children as "Deadbeat Moms," then I fail to see why men should have to concede terms like "PoliceMAN" or "FireMAN!"