Right Divider
Body part
He can't prove they're all real people, or that the two geneologies are in the right chronological order, he has to take it on faith. That's where his defense lives, there is no proof, only faith. He could just accept that and say "I know there's no way to prove they're all real people, but I take it on faith that they're all real people" and I could at least respect his belief even if I didn't share it - and conversely, he could accept that not all people will take a "flexible" and "fluid" genealogy as a historically accurate account.
You anti-Bible unbelievers are coming out of the closet. Nothing in the Bible can be trusted by your standards.