At our school, 8th graders can try out for the HS JV team; there is no middle school team.
When my son was in 8th grade, he and 4 others made the JV team. One day, I picked up 4 of them from practice (since they obviously were too young to drive themselves). The topic soon turned to their disappointment in how much time was wasted at practices, compared to what they had grown accustomed to in travel ball. They were also frustrated at the attitudes of the 9th and 10th graders, who seemed more interested in seeing how little work they could do as opposed to preparing to win.
My two cents at that time was that they should demonstrate through deeds -- without calling anyone out verbally -- how a practice could run, how players could hustle and push, and how winners handled themselves. They were aware that the school had never had a winner, and that meant that people had gotten used to just going with the flow, trying to fit in by "being cool." They needed to show that, at least as far as they were concerned, they weren't going to participate in that -- that they were going to establish a higher standard.
By mid-season, the team was struggling. Coach put 4 of the 5 8th graders into the starting lineup and the team took off, ending the season with a strong winning record.
The next year, 1 of them was a starter on varsity, 1 transferred to another school, 1 gave up baseball, the other 2 were captains of a championship caliber JV team.
Sophomore year, the 3 remaining guys started on varsity. They won their district tourney for the first time in school history, bowing out in the regionals.
The next two years, they won the AAA state championship, back to back.
What does it take to turn around a culture?
Surely a coach can do a lot. But in the end, you need players who have the strength of character to be effective leaders, and the talent level that gives them the "street cred" in the dugout.
To me, those guys were special players. But I honestly believe that every school has guys who COULD do this. It's just that most of them don't. So while I think there's no call for being the helicopter parent, I do think it's OK to make the firm point to young boys that their future is in their hands. It can be a long, miserable experience. Or they can make it more. Then you have to stand aside and see if they make it happen, or not.