I would say “no offence to anyone who does this” but, NO. BE OFFENDED.
Personally, I think this is even more evidence of why we NEED feminism. This kind of behavior toward women (letting them be bitches to men, coming to their aid, etc.) stems from the whole idea that women are helpless, weak, and can’t really hurt anyone. But we all know based on the cases of abusive women and UNabusive strong women, that this is not a universal truth — it’s a stereotype. There are plenty of women who can take care of themselves, fight their own battles, and in some unfortunate cases, are abusive.
Feminism is about viewing and treating women as equals to men, FULL STOP. Not, “unless a woman is beating a man up.” It is just as bad for a woman to hurt a man, as for a man to hurt a woman, but until both genders are truly seen as equals, the stereotype that women are harmless will be a part of society. Situations like these are certainly NOT proof that “we don’t need feminism” — it’s quite the opposite.