As to why kids play at higher levels with coaches that advance their hockey careers is ignorant? O.K. then.
Didn't make any sense to me, either. It's much harder to get scouted at a public than a Prep. Scouts can see a half dozen prospects at a Prep game, and they also know they can balance academics and athletics, and pay for school (at least partially in most cases).
Do some research. Read an article from time to time. Expand your mind before calling other people ignorant.