Perhaps it's not a phenomenon in Australia, thou we do have men's groups.
A friend of mine belonged to one such group, and they can be bitter, but not about women, more about the modern culture that has changed the socialization of men. If you read the book, 'Iron John,' you'll understand more of why, but I'll try to give a brief, albeit way incomplete, explanation.
In older days, pre and post tribal, men worked in the fields alongside their sons and often their daughters. They had a connection with the family and also the community that doesn't exist now. With the industrial revolution, men left home and worked in the factories all day. For the wives and children, they had much less of an idea what Dad was doing. He would come home, eat his supper and go to bed. Disconnect 1.
Along with this, there grew suspicion about what else Dad might be up to, out of sight of the family. This particular disconnect created a divide between men and their families.
The turn away from tribalism also changed a lot of the rituals that men went through, to become recognized as men, which now-a-days is reflected in the rituals amongst youth in trying to find their manhood. These days, manhood is often a peer validation thing rather than a tribal or elder thing. Disconnection 3.
There's none, or little, anger against women in the above, and is only a part of the purpose behind men's groups in Australia.
What I've tried to explain briefly is quite inadequate, and better explained in books like Iron John, or books by Steve Biddulph.
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I'm not blind to your facial expression - but it may take me a few minutes to comprehend it.
A smile is not always a smile.
A frown is not always a frown.
And a blank look rarely means a blank mind.