Yes the proposal was that no UAS flying above an
altitude of 500ft. This means that they are banning UAS from all areas except low lying coastal areas, Florida and Death Valley
It really is about time that the 'experts' from Amazon learned the difference between height and altitude. Then suddenly things become a lot more difficult as with hilly districts there is not such a nice clean cut off between layers of only 200ft depth measured as Above Ground Level (ie height) as opposed to a flat virtual sea level.
Sorry Amazon that's a 'D' now start the complicated thinking using the correct vertical metric.