> just plagiarize and flip them

FWIW this is a common human tactic in general. It's called DARVO.

https://en.wikipedia.org/wiki/DARVO

I note, neutrally, that it is typically a pattern seen in cases of abusive relationships.

Me personally, I see it a lot when confronting anthropogenic global warming deniers. They tend to hysterically shriek at me that I am a conspiracy theorist, science denier, etc. when of course the truth is that climate denialism is a conspiracy theory, as realistic as Flat Earthers and Young Earth Creationists.