That NY Daily News article is incredibly idiotic.
Air rights have been an essential part of the NYC building code for 70 years now, and the lower half of Central Park is covered in trees, meaning visitors to the park will not get building related-shadows but tree related shadows. You could surround Central Park with 10,000 ft. towers, and will not make a difference at all in terms of shadows in most of Central Park.
And if shadows are inherently "bad", I hope these kooks will protest the tree cover in Central Park. Time to knock down the Central Park forestlands, and replace with concrete! Don't want any evil shadows!