Ha!
I'm not religious and so the ideas of "pure and righteous" mean nothing to me.
I'm a feminist who wants the world to be a better place for women. When I see posters misrepresenting, lying or otherwise promoting views that will damage women I will engage.
I find your attitude rude, aggressive and intolerant of women from different backgrounds and cultures, but hey ho. You are entitled to hold and communicate those. I strongly believe people should be given a platform to express those views and be prepared to debate them.
I do find it interesting that people who aren't feminist are drawn to post on a board professing to be for feminists. And it makes me reflect on the quote about the overlap between GC spaces and different types of non feminist groups.