I don't like the mob thing either but it's how large group dynamics on the internet work (by default). We try to mitigate it where we can but there's not a lot of knowledge about how to do that.
There are a lot of stores that trend to number 1 in under an hour that end up disappearing completely from the front page, moving near the bottom, or flagged to death, within a couple of hours because it’s just not quality content for this forum.
The same bait (sensationalism, indignation) that makes many users upvote those posts is what makes other users flag them. This rise and fall has always been the pattern on HN—it's one of the cycles of life here.