"This means fully comprehending the circumstances that led to their choice, and this means holding those to account that contributed to it."
"their choice" is the key bit here.
We can (and should!) look at circumstances as you've described, but it does a disservice to everyone to accept a suicide as the result of anything other than the individual's choice--this cheapens the act.
Not only that, but the arguments in this thread ("Oh, he was depressed/bipolar/any number of other Internet-based psychiatric diagnoses -- he couldn't help it!") also serve to deflect blame from MIT and their useful idiots in the prosecutor's office. To read the comments in this thread, anything down to and including a parking ticket might have pushed him over the edge.
It seems hard for people to grasp that the actions of Aaron's antagonists need to be judged independently of his decision to end his own life. We really don't want to start assigning responsibility for other peoples' suicides.
"their choice" is the key bit here.
We can (and should!) look at circumstances as you've described, but it does a disservice to everyone to accept a suicide as the result of anything other than the individual's choice--this cheapens the act.