We've seen religious people do or advocate for all kinds of immoral things, so I do agree that talking about the Bible as a good source of morality is ridiculous. Even most devout Christians know their "divine" book is not to be trusted, or they would be following all the laws in there, not just the ones they like. And even their internal moral compasses are better than what religion has to offer, they just give it credit for things it deserves none for.