If you're that easily offended you're too easy to offend.
I am not that easy to offend. However I do play the game through my speakers and not a headset. Others in my home do not need to hear 'Fistfuqr' spoken in my house. I am sure you know there should be boundaries but hey, it is the Internet so anything goes right?
I am sure when your kid yells out 'Hey Fistfuqr' in the supermarket you will look on him / her with pride. I don't.
Sure I could not play internet games and not expose others to this but TBH the problem is not my lack of toughness or my over sensitivity that needs to be addressed, it is your lack of class and manners.