Not every person with psychopathy is a surgeon or trader at Goldmans, many work in normal jobs in factories or menial jobs and this is the very worst combination
This is true.
Many, many years ago, I worked with young man who, in hindsight, was very clearly a psychopath.
He worked in a very ordinary, minimum-wage level retail role, still lived with his parents, no evidence of a friendship group, or any of the things you would associate with a man of his age. Obviously, that could just be because he was a bit introverted or unconventional, but what made it obvious there was a lot more to him was the way he interacted with customers.
This was a role where he was often the only member of staff on duty, so his behaviours were not always witnessed, which is why he would get away with it for a while, at least, before it was addressed.
I am not talking about general rudeness, indifference, laziness, or apathy. This chap used to regularly shout and swear at customers, challenge them to 'hurry up', 'stop wasting his time', 'make their minds up' and so on, and not in an exasperated manner, but in a very belligerent manner. I saw him threaten customers with physical violence, and this was all accompanied by chest-puffing, staring, grimacing, brow-furrowing etc etc. All the typical actions of young men when they are angered to the point that they intend violence.
Of course, this did eventually lead to his sacking, and at that point, he returned to his workplace, dressed in full football kit, socks and all, accompanied by his mother, demanding to 'have it out' with management. So far as he was concerned, he had done nothing wrong, and the customers were entirely to blame for 'driving' him to the point whereby he would act like this. They deserved it as far as he was concerned.
Now again, I accept that could have been down to something other than Psychopathy, but what stood out for me is that he did not differentiate between strong and weak people. He would bellow at small children, old people, and huge men alike who would clearly have ripped him in two with their bare hands. He had absolutely no fear, or at least, he showed no ability to recognise when he was completely out of his depth in terms of when the implied threats were liable to land him in serious trouble.
I often wonder what became of him, because I heard from other people that this wasn't just his personality in the workplace, and that he treated everyone he interacted with in this way regardless of setting. He wasn't in any discernible way deficient in cognition or learning, on the contrary, I would have said he presented as being of average, typical intelligence and ability. Somewhat bizarrely, he wasn't even an intimidating presence physically, being of completely average build and stature, and looking like a bit of a "nerd".
I used to wonder if he was just seriously mentally ill, but things like the football kit just confirmed for me that he genuinely had no concept of how he appeared or presented to other people, and that he could not rationalise why his own attitude used to rub them up the wrong way.
I'd be shocked if I found out that he isn't either deceased, institutionalised, or heavily into incel culture or somesuch, because he was the epitome of the very angry incel decades before there was any notion of such a thing.