Yes, CB, the young players and parents are told the statistics by the SFA at U11 at the only session of sports science they get. And yes, the 1in 20 statistic is for those kids already selected for development squads - hardly the odds on which to build a career.
As for your other point: Don't get me started! Why oh why is there not a system between ICT, Ross County, Highland League clubs and Elgin City (for example) whereby boys discarded by one club can be trialed at others further down the pyramid. The best example is Clach and ICT: The coaching staff compete with each other for children at the age of 8 or so. No formal system for exchange of players recruited at the wrong level for ability. I realise the hatred runs deep, but not having the boys' best interests at heart is inexcusable. So many of those dropped give up football altogether or just play street league. Not that there's a problem with street league - great fun and well organised, but how much talent is lost to pro and semi-pro football on account of poor handling by clubs?