First off, I am not blaming fiction. I am blaming flesh-and-blood killers who are real people in reality getting real media attention by the real media in real life. Secondly, it's still the thing that set him off. It was the catalyst.
You keep missing the point, detachment from reality. Dave Cullen put it simply, “a "normal" lens.” You are trying to predict the actions and reactions a psychopath has through “a "normal" lens.” Psychopaths cognate very differently than sane persons, their behaviors and outlook are warped because of this. For the sake of simplicity call it “a warped lens.”
~facedesks repeatedly~ Here's a sociologist discussing both what should be done about this, and discussing the historical similarities between highly-reported suicides and increases in them.
You just confounded suicidal persons with psychotic persons. I have to ask, how and why do you think that these two groups of people are similar to the point of predictability? Heck the book you cite as a source designates an entire chapter (40. Psychopath) spelling this out in no uncertain terms.
Diagnosis didn't solve the crime, but it laid the foundation. Ten years afterward, Eric still baffled the public, which insisted on assessing his motives through a "normal" lens. Eric was neither normal nor insane. Psychopathy (si-COP-uh-thee) represents a third category. Psychopathic brains don't function like those in either of the other groups, but they are consistently similar to one another. Eric killed for two reasons: to demonstrate his superiority and to enjoy it.
To a psychopath, both motives make sense. "Psychopaths are capable of behavior that normal people find not only horrific but baffling," wrote Dr. Robert Hare, the leading authority on psychopaths. "They can torture and mutilate their victims with about the same sense of concern that we feel when we carve a turkey for Thanksgiving dinner."
Eric saw humans as chemical compounds with an inflated sense of their own worth. "its just all nature, chemistry, and math," he wrote. "you die. burn, melt, evaporate, decay."
Was there some sort of misconception, did you over generalize, do you just outright lack knowledge pertaining to the field of psychology?
Eric did not exhibit a Mood Disorder, he exhibited a Psychotic Disorder. There is a
huge difference between the two. There is a reason why Psychotic Disorders were Axis 1 Clinical in the DSM-IV TR, detachment from reality.
On a side note that article you linked made me IRL mad due to the sheer incompetence of its author. Not defining terms, in this case "copycat effects." Good grief what is this, high school? The opinion piece from which that term is derived is worse, flat out confounding multiple cases with different psycho-social factors.