"Of course I am fully aware that among many men there is an attitude that if a man cannot fight he's worthless. Look, The Big Country is one of my favourite films.
I would however expect a man who makes his living using his brain to have had a little think about that attitude and realise what it means to people who can't fight. And that includes women."
Hmm?
The standard advice to men who are having trouble finding a mate, and who have poor social skills, is to become more physically imposing. Not in order to fight per se but to make himself more sexually attractive, with that attractiveness based on physical 'threat'.
This doesn't have anything to do with women in that a physically weak man is still stronger than a woman, so 'manning up' in that sense isn't about dominating her, it's about his status in relation to other males.
Women aren't expected to fight, or to have physical threat, a woman can take some steps to make her self more attractive in relation to other females, but that won't involve increasing her physical strength particularly - lots of women go the gym, but there are typically quite different goals, 'tone' rather than 'bulk'.
What male violence means in relation to other men is different from what male violence means in relation to other women - a intellectual man who works in an office is just as physically capable of beating up his wife as a bodybuilder is.
I don't think it's the case that a man who can't fight is worthless, but rather that violence, or at least the vaguely implied threat of it through physical stature, is one way for men to establish dominance. Others will do it with financial success or personality, but 'threat' is certainly still a powerful force for men in terms of social hierarchy (and not at all for women).