

why they would want to pass trauma onto me
It’s not like it’s intentional, usually. Everyone has a different way of coping with trauma and sadly, one of the brain’s most usual defenses is repeating the same behaviour, because that makes what happened normal - if I do it too, how could it be something bad?
People who do that need a therapy to stop repeating the abusive behaviour, but as with alcoholism, the first step is to admit you have been abused. You would be surprised how many people don’t get past the first step. And that’s how abusive behaviour in people who are not necessarily psychopaths occurs.
As an aside, being a psychopath (not a sociopath, that term doesn’t exist in psychology) is also a defense mechanism, although one on the extreme side of things and it’s generally incurable past a certain age.
That guy is great. But nothing beats his JS developer interview: https://www.youtube.com/watch?v=Uo3cL4nrGOk