They started this (the text from their site) sometime after Spring/Summer of 2017, maybe later.
It's actually a good thing, there's more to it than meets the eye. For BAT to get to this point, there is more behind the scenes than is evident. I had a guy who "bought" my car pull a bunch of squirrely/manipulative moves to try to get out of the deal after the auction was over. He was clearly an impulsive and emotional guy, he was from south FLA, and after weeks of back & forth, with BAT getting involved, he realized none of his games to back out were going to work. It was too bad, he got a great deal. They banned him, refunded my listing fee (I didn't care about that, the 3 week hassle of dealing with a guy like that was far more of a headache than the small listing fee). They were reticent to relist my car, as I suspect they did not want potential future sellers to see this kind of stuff happening. As the site became more popular and more of this started to happen, they seem to have come up with an official policy and wording (per above). I believe if you, as a buyer, point out there were material misrepresentations and want to back out, they would not do this. For it to get to the point of them making the above statement, the buyer flew the coop or did something off the wall.