"Bitch" has too often been a sexist code word used to demonize women who dare to show any assertiveness or independence. So an argument that uses that slur three times in a single paragraph is immediately suspect.
"Bitch" is most often used to denote arrogance/hostility/etc. NOT desirable traits - in men or women. And that's how the attribute was used by the poster you attacked.
Also, your argument which consists of throwing a politically correct label/ad personam with nothing to support it is the one immediately suspect.