I can certainly agree that the experiences that one has in life may affect in the development of the character of a person but even though Aaron may behave in a childish manner, he is no child. As adults we are responsible for the choices that we make. Arron may have been hurt, brainwashed, deceived, etc but it is his choice to behave the way he does. None are standing there with a gun forcing him to say or do anything. In my opinion, neither is his past.
So trying to give the inference that he is a child, and therefore to some degree should be excused for his statements and actions, is just an effort to excuse him for what he has done and to make his actions somewhat more palatable to the audience here. He is an adult. He makes his own choices and he can therefore live with the consequences of those. He lied, he manipulated, and he now viciously attacks those that befriended him and attempted to help him in his time of need.
Sorry, but for whatever reason, be it his upbringing or lack thereof, his training, his indoctrination in Scientology, or whatever, he is responsible for his own actions. His post against Ferral was truly the act of one sick demented and vicious person. He gets no sympathy from me.
Something about you will reap what you sow.