@basedbagel - Yeah, this is very true. I've intervened in several cases, and the females are just as complicit. I wasn't white-knighting... These women were people I share DNA with.
With each new experience, I have found it more useful and expedient as a peacemaker/abuse-relationship-breaker, to simply impose your will upon both parties.
This means you have be strong, possess sound judgement, and be willing and able to inflict painful violence.
@basedbagel - Thankfully, it has never come to actual violence. But you have to be convincingly prepared.
I generally explain to the man, what the consequences will be if this continues, and that it's not worth it. And then I will often wish him well, and advise him to move on.
I would hold the females accountable for their end, but that's a pointless endeavor. Still, I'll explain what went wrong, what not to do in future, and apply social pressure to that end.