Question about the Brown Pyramid of death

I have camped at Ft. Stevens my entire life, so I know what you are talking about. We believe the warning is there to try to keep all in the park from dumping at once on a Sunday when everyone leaves during the peak times. We Oregonians get a rather short camping season, so for three months of the year that campground is full. It is a very old park, so probably not the best pipe system either, but that is only a guess on my part. All that being said, if we have a FHU, we dump at the site. We no longer camp there at peak season anymore though. We always go after the kiddies get back in school. Much quieter and less crowded. Our state Parks are a bit laid back, and we find that as long as we are behaving ourselves, and not taking too much advantage of the niceties, the park is mostly OK with dumping at the site.