Honestly - I assumed that also but never pushed the issue becuase I didn't need to and the regulations actually supported what this guy was saying..

Here are the regs from the guide:

500 Foot Zone - It is prohibited to hunt with, shoot, or carry a loaded firearm within 500 feet of any building occupied by people or domestic animals, or used for storage of flammable material, or within 250 feet of such buildings when waterfowl hunting in tidal areas from land shooting positions or from floating blinds anchored adjacent to land or from rock positions, unless written permission for lesser distances is obtained from the owner and carried. Landowners, their spouse, and lineal descendants are exempt from this restriction, providing any building involved is their own. The 500 foot zone does not apply to bowhunting.