If you want absolute silence, boondock by yourself. We do and the only noise you hear are the ones you make. ( oh yeah and the wildlife which isn't always so quiet)
Sound travels at night, we could hear two guys quietly chatting around a camp fire till 2am and they were a few sites away. We could also hear water heaters, fans, AC units, doors opening and closing and can't they make a outhouse door that doesn't sound like a screeching bird followed by a slam that can be heard across the campground.
BTW, we didn't go to the host or even mention it to them. They were trying to be quiet and enjoy their campfire. I've done the same.