I've literally never seen on DIS or anywhere else anyone saying "I rented out my points, the renter trashed the room and now I have to pay for the damage". And I doubt that has ever happened as the type of people who want to stay at a
DVC resort tend to be the opposite of the type of people who are likely to trash hotel rooms. But feel free to prove me wrong, if anyone has ever seen anyone post to that effect in the entire history of DVC.