What typically happens to people who are children of Christians and atheists or Muslims?
They are neither believers or non-believers. They open mindedly accept things and reject things without being able to figure out why it should be accepted or rejected.
So what? That doesn’t actually answer any of my questions, and besides, such children wouldn’t be any worse of an abomination than the unbelievers who already existed, so why would it be noteworthy?
How about answering just one question, though. If “nephilim” wasn’t understood to mean literal giants, then why in Numbers 13:33 do the Hebrew scouts tell David that they saw “nephilim” in Canaan who were so large regular men were like grasshoppers compared to them? We later meet some of these sons of Anak in Canaan and they are indeed described as men of giant stature, such as Goliath, so we know the description is not simply figurative.