I'm reading a tremendous disconnect between (1) the frequently posted themes calling for allowing parents to be responsible for their children's upbringing and for reduced government spending at all levels which (when combined with a simultaneous push to emphasize core academics - e.g., STEM) lead to predictable changes (like the de-emphasis on PE staff and classes) and (2) a then seeming willingness to blame kids' level of fitness upon others (academics, political leftists, etc). 
As far as playgrounds go - they are expensive to build and maintain, and inherently an ambulance chaser's dream. However, I saw great playgrounds in use in the schools in Texas and see them out here in NorCal schools...but I'm sure they vary throughout the US as much as any educattional facility, curriculum, community interest and funding, etc goes.
Richard
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“Sometimes the Bible in the hand of one man is worse than a whisky bottle in the hand of (another)… There are just some kind of men who – who’re so busy worrying about the next world they’ve never learned to live in this one, and you can look down the street and see the results.” - To Kill A Mockingbird (Atticus Finch)
“Almost any sect, cult, or religion will legislate its creed into law if it acquires the political power to do so.” - Robert Heinlein
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