IMO, it would've been a better idea to not publicize the possible identity of the boy until the DNA results were back. It would have been newsworthy enough that an injured boy was found and he described the men who he said held him captive, because finding them was the focus. I just feel really bad for Timmothy's family right now. The DNA only took about the 24 hours predicted, and had LE held off on releasing the possible ID, the Pitzens could have been told after the fact that a young man had claimed to be Timmothy but DNA was not a match.
This story has been on my mind, and if the young man was escaping from an abusive situation, he might have feared LE wouldn't take his claims seriously and would return him to his abusers, so he claimed to be a missing child. Again, I feel terrible for Timmothy's family but there is a chance this unidentified young man was doing what he felt he had to in order to save his life. This is all purely speculation, but he might have sought help before and wasn't believed.
ETA: We were all posting at once, and it looks like this wasn't an abusive situation at all, so disregard the last paragraph of speculation. What an utterly crummy thing to do.