Several posters have alluded to food safety as a concern for the rule change. This would only be a problem if the product were held for more than 3 hours and 59 minutes in the unsafe zone of 41 degrees F to 135 degrees F (numbers a lot of us live by day after day.) The time from turn in to judging is less than 30 minutes and most cooks spend 20 minutes prepping their box. If turn in for pork is 1:30 then the pork can be taken off the cooker and placed on a table at 10 am and still be within the servsafe guidelines when the judge eats his sample. Just saying, that is a non-issue on this subject.
For the purist out there that want the product to be hot when the judge samples it, go judge a contest and see how hot the product is after being opened, judged for appearance, passed around and sample placed on tray and this is times six boxes. It is then sampled one at a time. I would venture to say that by the time the judge actually tastes the product, it will be close to ambient temp.