I agree that this is a ref perpetuated myth. But I don't think it deserves a place on BillyMac's list. I actually prefer to have the players back at the half line; I think you get fewer problems that way. I won't attempt to enforce this non-rule. I will tell the players to "clear the lane" and "move back" as necessary. But I'm not volunteering any specifics. And if I'm not administering the free throws, I'm back at the half line.
Does that make me partially a bad man?