I haven’t followed Ehrman recently and so can’t speak to your assessment of his faith here.
But I will say this. Anybody who comes away from the gospels thinking that the God of Christ would do anything that no honorable person would do when in possession of all the facts has badly misconstrued the heart of the gospel message. While prooftexting of certain verses that tell us to “hate” our children and spouses can lead to such a simplistic (and wrong) conclusion, the god who would preside over such hatred (construed as a mandate to refuse love to our own family) is not a god that could provide any meaningful salvation to anyone, much less be worthy of worship. Fortunately the scriptures do not teach any such thing.