I guess this hostility is the side effect of the innate competing instinct of every men and women, it is more apparent or stronger in some and these people become aggresive if they can't win. I know this may have sounded strange but think about it for a moment.
Well one of the events when the BHG assaulted Minor Krixx and I tried to scramble the resistance in system chat, although I rarely have the luck to catch an event like that.
About the word "coward" well I usually have the luck to be called one by BHG bombers trying to bully me into jousting them, hehe. Your interpretation is interesting, I personally have no problem with it. Here is what it means to me.