I preach about class a lot to my team. I coach varsity lacrosse at a small, rural high school. I agree that children are wired differently today, but I also agree that this is the fault of their parents.
I teach my kids to avoid excessive celebrations after scoring goals or making good plays. I teach my kids to avoid trash talking with the other players (you wouldn't believe what goes on on the field). I also never allow my players to shoot on goal if we have a substantial lead with 5 minutes left in the game. My kids always refer to the officials and opposing coaches as "sir," and never talk back or are disrespectful or else their butt is warming the bench. Class and character is very important in sports, IMO. It is my hope that these skills translate to life.
I played a game recently against a team with a younger coach. It was clear that he had no control over his team. He was talking trash to me on the sidelines, and his players were also being overtly disrespectful to me and the officials. I couldn't believe what I was seeing. Unreal.