I don’t disagree about JV playing time. But the decision is really the V coaches to make. If he wants your son up, that’s probably what’s best for him as the coaches know exactly what the pros and cons are.
I’m not sure who doesn’t choose to stay up?
The HC worries about the varsity team not your son's individual development. "Best for him" is pretty far down on the priority list. If the HC wants a great "scout team", he keeps him up. In the old days freshmen never made varsity unless they were playing. Otherwise you played on JV and got enough high school game experience to help you develop.
Good coaches at every level worry about player development. Freshman players who are talented enough to be impact players their sophomore and Junior years can also be brought up to varsity, so they can learn the system and practice against bigger, stronger, faster, higher caliber players. They may play a lot, or they might get time in varsity games where a win or loss cant be placed on their shoulders. Either way, they still develop and are prepared to be impact players for their team. If a coach doesn't see that value in a player, then they stay on JV to develop. If they do not develop into an impact player on JV as a freshman, then they MIGHT play 2 years of varsity lacrosse.
