The term "hater" was designed by and used exclusively by total pieces of shit for so long that it would never occur to me to reason with someone using it "incorrectly". People who are so horrible that they have the ultimate final horrible human attribute: the inability to take responsibility or to even acknowledge their own horribleness to such an extreme extent that they actually see all of their critics as the cause of all the commotion.
Suge Knight has "haters", surely the reason he's on trial for murder AGAIN can't be his own murderous self. That dead guy's family are just haters.
Using the term "hater" in a non-ironic fashion is the fastest way to tell people you are a total cunt, that you have no interest in fairness, logic, history, etc, and I fully appreciate people like this using it so that there is no confusion.