I had to laugh at this one, not because I disagree with the basic premise, but because it also perpetuates stereotypes that harm people. The best data we have available on domestic abuse shows that women abuse men more often than men abuse women. The spectacle of the man beating the woman bloody is what gets attention, however, and so many people assume most domestic abuse is aimed at women by men because of that. It's supposedly OK for women to abuse male partners because "she's just a woman" and can't "really" hurt him. A man, I guess, is supposed to suffer the abuse gladly.
It illustrates the point well that a lot of oppression happens because folks don't understand what they're doing.
When speaking of various forms of non-monogamy...it ain't poly if you're just fucking around.
While polyamory, open relationships, and swinging are all distinctly different approaches to non-monogamy, they are not mutually exlusive. Folks can, and some do, engage in more than one of them at a time--and it's all good.