On one hand, it is very important to avoid blaming the victim of abuse. It always floors me that anyone would suggest that someone who has been abused is somehow guilty or unclean, yet that's exactly the message that ends up getting sent sometimes. Sometimes it's framed as "you should have prevented it," but in any form, that message is wrong. It's deeply immoral. It's tantamount to colluding with the abuser, since it increases the damage done to an innocent person.
Another true principle is that it is good to avoid dangerous situations. If you don't avoid it, you're not guilty, but still, it's important to teach people to avoid bad situations if they can. If you get mugged in a dark alley while alone at night you're not guilty, but it's still a good idea not to walk down a dark alley alone at night. You don't leave your house unlocked just because it's not your moral responsibility to keep others out of your home.
The problem (well, a problem) is that people who call out that second thing frequently get accused of denying the first thing. That argument about not blaming the victim gets turned into a straw-man argument and thrown at yet another innocent person (ironically), as if any talk about prevention constitutes blame of the victim. That's very unfair, and very untrue. Both principles are important and need to be addressed. And taking an ally and making them look like the enemy so you can have someone to lash out at is counterproductive (and potentially immoral in itself).
So we shouldn't blame the victims. But teaching people to avoid danger is important too. And in doing both, we should be careful not to create enemies out of allies. There are enough bad guys out there as it is.
And one more thingSpeaking of blame: Apparently there are a lot of guys who feel threatened by that whole movement. They hear women saying they don't trust men, and they throw out that "not all men" hashtag and complain, as if they (the men) were somehow wronged by being grouped in with the abusers.
Here's the thing. While it is true that not all men are evil scum, that's not really a super relevant point to the discussion. It's certainly not helpful to a woman who has been the victim of abusive behavior, especially by many men. Women don't owe us their trust. We haven't been wronged if a woman doesn't trust us, even if we really are good people. And even if we are somehow damaged by that lack of trust, that damage is insignificant compared to the level of damage the woman in question has suffered. So if you're feeling threatened by a woman's distrust about men, or even overly-broad accusations against them, then help fix the problem instead of just trying to distance yourself from it.
How can we fix it? Well the obvious way is with your fist or another weapon if you witness an act of abuse. If it's verbal, you can speak up and hold the abuser accountable. At the very least, don't be a part of the problem. Which takes us back to my first point: Don't blame the victim. Stop complaining.