we know since this that there has been no proof of a link between these brain injuries and acts like Benoit's. At best, it is a contributary influence, just like the steroids. But give another man the same trauma, and pump him full of the same drugs, and the result is not the same in any other case ... So how do you explain that? You cannot "vindcate" Benoit or excuse away what he did.
Tests were conducted on Benoit's brain by Julian Bailes, the head of neurosurgery at West Virginia University, and results showed that "Benoit's brain was so severely damaged it resembled the brain of an 85-year-old Alzheimer's patient."
Tests conducted on Benoit's brain tissue revealed he did in fact suffer from severe chronic traumatic encephalopathy (CTE), and had brain damage in all four lobes of the brain and brain stem. Bailes and his colleagues concluded that repeated concussions can lead to dementia, which can contribute to severe behavioral problems.
I actually just got done reading about it and happened on this topic. He had three drugs in his system that were at "therapeutic" levels. Hydrocodone, hydro-morphine and some sort of testosterone. It was prescribed to people who had testosterone deficiency from previous steroid abuse.
There is definitely a chance his head injuries, at least in part, were a factor in the double murder suicide.
The only way that leads anywhere is to point it eventually into the path of saying he was legally insane at the time of the murders: yet his actions both before and after them indicate just the opposite.
Also those conclusions you mention are far from being widely accepted (including many in the wrestling industry itself ridiculing them). Benoit's head suffered no more or less traumatic blows than a multitude of other performers (many over longer periods of time): so why are they not murdering their families?
Even if we say a perfect storm event occurred, part of that storm is the criminal intent itself, the inexcusable motivation that led to the premeditated murders.
If his head inuries were a factor, I say, so what? That in no way mitigates what he did.