In contrast: A few years ago I was hiking on the Pacific Crest Trail (PCT). One of the few rules to follow there is to explicitly leave no trace, in respect to nature and others.
In contrast, people go to blogs to find opinions, and traces of opinions of others are usually adding, not subtracting. One can say whole HN is a sandbox for sharing opinions, therefore "untouched" posts with no comments and low points are less attractive.
But the worst part of hiking was seeing brightly-colored bags of dog shit right next to the trail, so I guess overall I’m ok with a general “leave no trace” rule. Then again, someone inconsiderate enough to do that wouldn’t care if there was a rule against it, so ¯\_(ツ)_/¯