The more I think about this part, the angrier that makes me. As the adults in this situation, it was their job to report any cheating they were aware of. Didn't want to make waves? Well look how that turned out. They did the kids on their own teams a disservice by not "making waves"
Expecting the rules to be enforced equally should not be considered making waves. Especially in a situation like this, where half of the point of sports is helping kids learn how to play within rules, be good sports, don't be sore losers, etc. When the adults in charge of a team won't stand up for their own players and ask for cheating to be investigated, what message does that send the kids? Just roll over and accept that others cheat so that you aren't accused of making waves?
Seems like a LOT of adults in this situation made poor choices.