It's actually considered rude for any non patch-holder to approach two patch-holders having a private discussion. Gender isn't important in this instance. I'm not saying there isn't a ton of misogyny in the MC lifestyle. There really is.

"Any"? Including family? Doesn't your wife or girlfriend constitute a very special category? If not, then then are indeed messed up.

There's nothing the the article that says that is gender specific - a male non-member would have been equally unwelcome.