It matters in the political arena. It can help you gain allies to your cause or to dissuade others from joining your enemies if you can paint yourself as the innocent victim and your enemy as the greedy aggressor/bully.
As to why it matters here, in this OOC forum? I have no clue, except to say that sometimes players get caught up in the passions of their characters. I know I do from time to time. 
Players have a difficult time separating OOC from IC on these forums. That makes these forums just as important for in game staging as messages sent through the game....if not more important since the forum messages reach a wider audience.
