God hates him
Question 2: I would absolutely engage with him about his thoughts on God and religion. Being "rejected" by both is religious family and the deity they worship is a massive factor of who he is and how he moves through life. Using the strengths approach, I could use this to help bolster his individuality and his personal strength since he rejects the others. Also, refuting and distrusting God, doesn't necessarily mean that he is not spiritual so engaging him in this conversation might lead to a spiritual response / treatment that was previously unseen and lumped with "useless religion" in his head.