Your 4.0 GPA is your best option for getting as far away from your family as possible.
He doesn’t have to maintain a stellar GPA to get away. There are many good schools that will accept him with his imperfect GPA. He can even pursue a career in something non-academic. He can join the military, for instance. He can do what he wants with his life. I see no reason to encourage alienation from parents who obviously care about him.
That isn’t what I meant. Sometimes some distance helps. I liked my parents more when I moved out.