1 - the low-level games, where it's fun, and no-one thinks it is more than it is, and everyone is generally chill. 2 - the very high-level games, where even the parents know that the last thing their kid or the team needs is them messing with the referees, etc.
But most of the issues came in between. The kids who were absolutely talented, but were never going to play professionally. But they were still well ahead of the first group. Those were the troubles, where parents, coaches, and players felt that they truly belonged in group 2, but the only thing holding them back was the referees or whatever else and had a need to prove themselves. Never has a quote been more appropriate from Top Gun, "Son, your ego is writing checks your body can't cash."