I do not believe MIT was a bully. A bully is someone who harms others because they can; MIT was responding, I believe reasonably, to a person breaking into their network closet and violating their terms of access. That that person happened to be at risk of suicide was tragic, but not their fault; I can't even think of a way the legal system would be able to reasonably take that into account, nor can I imagine how a system of morality can indemnify a person's actions because they happen to be suicidal.

You might not think what Aaron did was morally wrong or deserving of negative repercussions, but others might reasonably disagree.