This is one of the best backstory, it's so realistic and interesting knowing why they become who they are now. We can't blame anyone, each of them make a mistake. True, he shouldn't try to become a though guy, now it backfire to him. When he needs help now no one can help because he used to do everything by himself. Before I want to punch all of them for making him to do everything but now I understand why. Now they thought just leave him to do everything will be better than helping him, because they are afraid of making it worse.
In short, they need a good communication. Don't try to do everything by yourself, it's normal for a human to need help.