Believe what you want.
He was punished under the rules and was defaulted from the match. Does every member on the Jr DC team camp have unblemished backgrounds in the last 12 months?
With out clear cut standards, I'm not for subjective judgement especially from the organization you deplore the USTA arbitrarily sanctioning kids. If they can't get it right now, how without additional clear cut guidelines do you think they will get it right in your fantasy world?
Write the committee or chairman who selected the kid and ask them why given these circumstances they picked him.
"i thought those were just a little harmless brown bugs, you know the ones take wings and fly? but it turned to be Flees." Fedace