Unfortunately some men are sexist and cannot cope with the fact that women have a place where they can safely speak about their issues without men jumping in to talk over them and tell them what do. They find it very threatening.
Yet a comment about women in the same vein would be jumped on by people like you. Do you genuinely not see the hypocrisy in your post? There's a difference between feminism (which doesn't seem to me to be the main point of MN) and your disdain for all things with a penis. I think that if you'd had nicer men in your life, you would hold them in higher regard. My male friends, relatives and partners have all been wonderful and never threatened by women having a place to talk. Are you Bahar Mustafa?
Have any of you ever stepped back and seen just how nasty and vitriolic a good percentage of posts here are? Take the father of the wife who had a mental breakdown due to her c-section date being changed. Horrible posts directed at him / them. A quintessential AIBU thread.
There's an in-group here, as with many other forums, but the bullying and sheer bitchiness of so many of them is astonishing. I suspect it's largely due to the way people change their usernames and protect their anonymity at all costs; perhaps lots of users are actually pleasant people in real life. Of course there are plenty of lovely people her but they're often shouted down as people trample them to jump on a bandwagon.
I work in IT and often have to (professionally) venture to the darker corners of the internet. Never come across anything quite like MN and AIBU.
Having written the above, never listened (knowingly) to Matthew Wright.