They also can't understand nuance or complexity. For them, things are totally black or white. I once argued with a goon who seriously believed that there were only two political doctrines: what he personally believed, and literal swastikas-and-genocide Fascism. He said the idea of shades of grey in morality and politics was "toxic". You see it elsewhere. All Cops bad. All troons good. Autistic, black-and-white thinking as far as the eyes could see.
This means that if KiwiFarms bad, then everything from it bad, even things like the Lowtax DV Police paperwork came from there, they must be wronthink because bad people can't do good things and vice versa. It's the same thing behind cancel culture - you can't he a good person who did the wrong thing once, you are either a paragon of virtue or Satan himself.
This is why they can't comprehend KF's attitude to Logan. She can't be a bad person AND a victim, that's way too complex a moral situation for them to understand. They believe it is OK to assault "Nazis" because they are bad people. But if Logan is a Bad Person, that would make it OK for Lowtax to assault her, and that is Haram wrongthink. So Logan MUST be a good, blameless angel, or Lowtax is in the right.
The truth is, people and situations are complicated. Just because someone is a Bad Person does not make punching them good. It just makes you a worse person too. That Logan may be a crazy, manipulative thot but that Lowtax was also utterly wrong to abuse and assault her is completely anathema to their childish heroes and villains worldview. That's why they accuse KF of double standards. It's not, it's just a more advanced view of the world than they are capable of.