Never heard that term before, but looking into the original webcomic, it kind of comes off as a defense of bigotry and hate. Like, I get how it sort of relates to what everyone’s attributing it to, but if someone says they hate “those kinds of people”, should they really expect to not be harangued for it?
To be clear, I’m not trying to defend the user “just asking for evidence” here. Just questioning the source of this term, which seems, well, questionable.