IMO that's outcome based thinking.
Playing time depends on skill and skill is relative to the other athletes on the team. My DD will pitch one out of 3 games in travel. That's enough as she faces top teams. Now if I wanted her to get a ton of time I could move her to a lesser team but what will that accomplish? Her goal is to face the best teams she can to get her ready for college ball. It is all about the goal of the kid. I assume this coach was addressing kids who want to play at her schools level. If that's the case 18-22 kid rosters are commonplace and all the athletes are good. Everyday is a competition and that readies them for programs like Washington.
Also if the kid is that good she will play every game in HS. That's 30+ games there too.
Not all players are pitchers. With a ton of kids on the team there is just not enough available playing time when you have 9 subs.
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