I'll outright say that I never claimed that people with mental illness are more likely to assault someone or what not. Your argument has the parameters a bit confused, as I was claiming that of criminals, there will be those who have committed crimes and have mental illnesses, especially as some personality disorders like borderline, antisocial personality disorder, conduct disorder, and other disorders do show violent tendencies. It doesn't mean everyone who has this disorder a violent criminal or if a disproportion amount of people who are criminals have this disorder, that doesn't translate to the entire population because that's not how statistics works, and just because a disproportionate amount of a population of interest has a disorder, that only speaks to the population and not the disorder itself.
Also, causes of personality disorders can vary depending on what it is. Trauma can certainly lead to certain disorders like anxiety disorders, PTSD, major depressive disorder, etc. What can cause personality disorders is a mix of biological, psychological and environmental factors and can not all be painted with such a broad brush. For instance, someone may be predisposed to major depressive disorder but never go through it because of lack of anything that would cause it. It's a bit reductive to say someone is just born with a personality disorder because each one is different and may arise differently. ASD you are certainly born with and Schizophrenia is a mental disorder that can arise later in life but has heavy genetic factors, however, other disorders are similarly likely to arise from circumstance, as PTSD would only arise by definition if you had a traumatic experience. However, all of this is irrelevant in this case because we're trying to apply generalities to an individual which doesn't work, especially as everyone reacts to things differently. Asakusa was traumatized by his experience and saying that lead him to abuse isn't necessarily inaccurate in terms of what the narrative implies.
There is evidence to suggest significance between the two, and mental health disorders arising from abuse or neglect are real phenomena, and
child abuse is linked to antisocial personality disorder, though it's a chicken or the egg scenario without further research.
Finally, I'll discuss morality with you because I have always been interested in philosophy. I'll be clear in this: I don't believe in good and evil as an objective force or anything beyond something humans have made. It's too simplistic to reflect reality. For instance, you reference the Holocaust but Hitler, who also was an abuse victims by the way, had an entire philosophy behind his actions and a twisted view of what he was doing as moral due to his own internal and insular justifications mixed with the socioeconomic and cultural situation in both Europe, the world and Germany at the time. Similarly, Pol Pot, Joseph Stalin, and Mao all believed what they were doing was good not only for the preservation of their country, but to ensure that their communist party was successful, "the ends justify the means." Humans unquestionably rationalize their actions, they get caught up in mob mentality, follow authority to a fault, and are too easily swept up by emotions. It's the banality of evil, the leaders of the extermination camps came home everyday to a wife and loving family as if nothing had happened, and those who have caused more death and destruction in the world all believed themselves to be the moral force for good. That is why I can not say in good conscious a person is just "evil," or that people just commit actions because they are "evil," because such justifications are dehumanizing and reduce the complexity of people down to such a base aspect, and that line of reasoning itself also leads to just as much evil as the people it claims to be fighting. Because if you paint your opponent as worst than you in every aspect, anything you do becomes justified.
@blazing_boz