In defense of the RO's at Cherry Creek, as a public range, they have to assume everyone on the line is an idiot until proven otherwise.
Batteriesnare Hangs there, or used to, and put up a good word. Once the guys got to know me, no one got stupid.
Their house, their liability, their rules. they are playing to the lowest common denominator as a safety mechanism.

Hell, I've been treated worse as a guest to a private range. Not naming Names... but I was yelled at for someone else uncasing their (unloaded) weapon while a guy was goofing off down range.