As the resident feminist-dude here, let's go through this step by step Vuk, hand-in-hand.

First of all, it is YOUR opinion that there is a 'male' and a 'female' opinion on abortion, and not fact.
Abortion is a female issue, is it not? Women often feel much more strongly about abortion than men, which is why female perspective on the issue are necessary for any debate about it. The actions in that thread marginalised and minimized contributions from women.

(in fact, facts do not support that assertion at all. According to this polling data more women than men believe that abortion should not be allowed, which I guess would make Pro-life the female outlook if there was such a thing.)
That data is within the statistical margin of error. Besides, that data neglects to mention the group of women who are pro-choice but anti-life - i.e. they think it should be legal, but would never undergo an abortion themselves.

In most abortion threads we have had, most male members consider abortion through the perspective the woman who is pregnant, and the baby whose life is on the line. Most times the role of men is barely considered if considered at all.
As it should be. The embryo/fetus is a part of the woman's body, not the man's.

I am sorry Pap, but is a male perspective less valuable or worthy than a female one? Should men then not have opinions? Why is a male outlook 'obnoxious' simply because it is male.
Check your privilege.

That is a pretty sexist attack on all the male members of this forum (probably 90%+ of the members here).
Sexism is prejudice backed up by power, usually institutionalised. The mod's decision was not based on any prejudice against men, but due to the behaviour of men in that thread.

Do you object to the fact that on a majority male membership forum most of the opinions you hear are from males? Should 80% of us shut up so that there will be an equal number of posts between males and females?
Please don't stuff strawmen with straw.

Of course you are gonna hear from more guys than girls, considering that most people who frequent the Backroom are guys.
As a general rule, women are often very self-conscious about speaking up on an issue like that (or indeed any issue) when men are very present/vocal. By collectively mansplaining on an issue which is very personal to all women, women are put off from commenting both in the thread, and in the wider backroom. This isn't an environment that should be fostered - would you not agree that any behaviour the Backroom engaged in which put off black members to be unacceptable?

I am sorry if female posters got offended by it, but you know what? There were opinions expressed there by guys that offended me too! I am sure my opinions offended plenty of guys. On a subject that people care about a lot, of course people with find many other's views offensive. It is the nature of the debate and the nature of the Backroom.
Offence isn't the problem. Make sure that your privilege has been checked by the time you reply.