I think you're right in one sense, in that there is too much emphasis put on results too early (certainly I feel this s the case over here). On the other hand though, players do have to be "great" by 16 (depending on your definition of great of course). Whilst there is a second window of opportunity between 16-18(ish) to develop coordination chain based tasks, it is much less effective than the earlier window (up to around 12-13) - so the groundwork must be done.
So for me, great in terms of tec/tac/phys/mental skills by 16 or thereabouts is essential, great in terms of results starts at 16.
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