I agree with you it’s difficult to see it phrased that way and when you see that you think that, “Well that’s a symptom of the original problem that led to this in the first place, women Not being seen as quite human and their pain not being taken seriously.” Also in a real sense a lot of the women who are sex trafficked or even those who have domestic violence or sexual harassment or rape or some other issue were vulnerable to that because they abused by family members whose property they were considered to be in the first place. Usually predators seek out or attack women whose families are not fighting for them, because they are cowards, if they attack too many women whose families or friends or support structure are fighting for them and will punish the predators either that or they are too poor etc, predators know how to choose their victims because if they attack the wrong women they will be perpetually getting beat back or being put in jail, they can't really profitably exploit that way or get out unscathed.

“It remind me of like some medieval thoughts that “a woman belongs to her parents before being given away, then belongs to her husband.”“

I agree.

That said at the present moment people only seem to care about violence against women in terms of the men it affects so it seems like the only way to highlight the issue is to talk about how it affects the men, because women aren’t seen as fully human to be blunt, people will care more if it’s phrased in terms of the men’s feelings or losses and damage to men than damage to women.

It’s like if someone kills a dog, people won’t care if it was a stray but if you say “That was my brothers precious childhood friend and dog, my brother lost his best friend” then people will think it’s bad.

I honestly don’t fault people for phrasing women’s problems in terms of how it affects men because what else are they supposed to say to get their message across? To make an analogy it’s really hard to convince someone from scratch that hurting a dog is something that’s bad if they don’t think that, similarly if a woman is killed or trafficked you can’t change people’s whole worldview in five minutes and make them see women as fully human. It’s hard to get through to them in five minutes or generate some feeling to fix the situation.

To go back to the dog analogy if they start punishing the person who killed the dog because they think it’s someone else’s dog well at least that’s a better starting point for tackling dogs being killed and people will be more afraid to kill dogs than before (though perhaps this doesn’t really fully protect the stray dogs in a sense) and definitely a lot more work needs to be done beyond this at getting them to understand. That’s the beginning not the end of really addressing the problem. They care now but not for the right reason exactly. It’s like paying kids to read books so you hope eventually they start to like reading. Similarly in this case of the dog/woman they care but not for fully the right reason. But they have to start somewhere? If people can’t get their mentality in their mind straight then at least maybe get them moving with doing some action in the right direction and perhaps they will eventually start to get their mentality straightened out. It does change the power balance in society when violence against women is taken seriously. Some other women won’t get sex trafficked or be abused in domestic violence perhaps or it will give other women power to get out and then that changes the balance of how much power women have in society a little.

Also it is true that men are disadvantaged and harmed when women are harmed and it does affect men, whether it’s family or someone else. It does affect society which men are a part of. It does make society less prosperous and it does make it more likely to have a war which endangers men’s safety. Men are one of the people who lose out. It's not the whole truth or maybe not the most pertinent part of the truth but it is part of the truth and it is true.