I wouldn’t worry about your command of the English language, it is very good. But I do agree that words can be a weapon, Ivana Knezevic. Ironically, that’s the reason I chose to respond. And, because I found the original comment to be an attempt to damage the truth and credibility of an issue.
And while it was not meant as an insult, you are correct in your reading of some anger in both my style and tone. Anger, when not directed personally or channeled inappropriately, can actually be a good thing. It is a very human emotion, and one that is often completely justified. That includes anger in writing.
Was it justified? In my view, completely. Obviously others mileage will vary. That is not a bad thing either.