the problem is what can be done, we run the risk of discriminating new users, it is a problem we have all ways faced here as the whole point of bitcoin is its true value is in its anonymity, so there has to be some trust, but to not trust two of the most trusted members on here is a little silly, but hey, its their choice, I struggle to believe that someone holding a 2011 cas coin with holo error (and knew what it was) did not know how an escrow worked, so I was ok to pull out.
If it were up to me I would prohibit newbies from bidding in auctions. Not my decision though. I can tell you for certain if I put up an auction I will disallow bidding from new accounts too great a chance of shilling or non-payment.