This is only natural because the post features a picture of a woman holding a highly misandric and hugely misleading sign.
Besides, it's one of the rare venues to talk of what's important. And when there actually are rare posts or comments regarding abuse of men, many women flock in as well to tell about women rights.
I follow you, until the last part.
"Men don't matter", "women don't matter" - those statements often seem to imply that the other gender is dominant and treats the other as disposable. This is not true - both men and women heavily suffer from bias, discrimination, and abuse - both in their own ways.
Traditional expectations hurt everybody, men and women, and should be thrown out the window. This includes a traditional concept that men are always perpetrators but not victims of abuse, among other things - something that is still commonly ignored, sometimes out of genuine ignorance, sometimes in bad faith.