You're worried about the the vehicle / the vehicle components in such a situation?? You'd rather be worried about the driver + passengers. In such an event, none of the clever electronic safety mechanisms will be able to kick in and rectify....
It is good that Ineos takes the proper path and just replaces transfer cases in doubt!
What I dare to criticise is letting the vehicle sit at the dealer for weeks and weeks, let the client issue full payment and license the vehicle, and then, in the last minute, come around with "Oh, haven't we told you that your transfer case is faulty and has to be replaced?"...