I don't see how your question follows from the rest of the discussion, or in what specific ways you are suggesting people argue to be equivalent. Both K-12 sports and Olympic sports are understood to be sports.

To restate myself, sports during childhood are much more important than elite world championships. Almost everyone I know did a sport with peers during our formative years, myself included. Meanwhile, nobody I know was ever close to qualifying to be an Olympic athlete, and I feel certain the same is true for most of the people in this thread.