It's called projection, and it's one of the defining traits of pathological narcissism. Projection is a result of those who exist off the deep end of the narcissistic spectrum dumping their self-hatred onto those they consider threats to their fragile egos. They can't and don't comprehend the consequences of their actions, shifting the blame onto a scapegoat. They're too weak mentally and value an extremely distorted self-image above all else. So they subconsciously make anyone who sees through them a proxy for their self-hatred. The behavior is pure insanity and thereby regarded as the confession of the crazy. When these asshole lunatics get away with it, it's because of naive unobservant people or because very few people have the energy to keep dealing with the constant crazy-making.
I'm sure you've also noticed the very same people exhibit other peculiar behaviors. They proclaim to exhibit the values they covet such as empathy, yet unable to demonstrate possessing them (look at these SJW faggots pretend to against racism yet sort and define everyone by color). Even worse yet, their brain is hardwired with an inverted social reward (hurting others brings them glee, others being happy makes them envious and wrathful, and deceiving others excites them). These miserable fucks can't carve out a meaningful life, drifting from one quick and dirty dopamine hit to the next. Since lying is breathing to such dopes, it's impossible for them to discern fact from fiction, especially by having a selective memory at their convenience. They're always maintaining a golden sheep and black sheep dynamic in their life. It isn't even limited to people. Pets and objects are also regarded the same way to triangulate. Ironically, they're much closer to being actual NPCs. A meta smackdown of their sophistry predictably causes a grievous narcissistic injury and an extinction burst of disproportionate rage.
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