I'll refrain myself from commenting on this particular point.
However, I do must say that don't let this affect you or make you answer back in a mean way. Sometimes, you have to fight for what you stand for and sometimes, you just have to drop the issue. But overall, try to prevent mean words from coming out of your mouth (you're not the type to do this, but I say it just in case. You know me: better safe than sorry). Sometimes, that's what some people look for (for a way to show that you're the bad one).
Oh believe me, I won't let this antagonize me, but if this continues I will say something. You know me, when I say something I can really say it.
I don't understand by "mean words" you mean. If you mean by derogatory words like personal insults, you know I normally won't resort to that. As for words that might be put down the other party, I am not sure I can avoid that. I will point out the flaws of the other party and shows how they may be wrong, but as shown some take this as a personal insult.
As for dropping the issues, I always drop it after I said what I need to say, if it is worth saying at all. Just tired of people ruining things for others and it seems to be happening a lot lately. Now we here are all intelligent people, but I can't stand when other people patronize or make fun of others for their lack of knowledge. Even if they don't know, no need to be rude to them and put them down in derogatory fashion.
Like you said, some need to let go of the petty arguments and move on. I hold no grudges even if I do fight with people on occasion.
It just needs to stop. It all needs to stop and people need to learn to read the posts before they reply to the comment.
Yes, for others reading, I have my own problems and I am working them out. What are you doing about yours?