I know what it is. It’s considered outdated at best, dangerous at worst. The sort of thing that’s a barristers wet-dream if the prosecutions witness is stupid enough to raise it.
I'm never been particularily convinced by it either. But the point is simply that an indicator for something, in and of itself, is not necessarily similar to that thing.
I'm a moderate American voter with slightly libertarian leanings. None of the nonsense from the Right about the travails of white guys in the modern era resonates with me one iota.
Nor I.