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.
Edit: to expand a bit lest that seem snarky - what I mean is that maintaining the current system takes so much energy that there's precious little capacity left over for creative exploration. This is a problem.
It's the only way to be sure.
From an admin point of view it's tricky because (unless I'm high on koolaid?) this is a major technical development, so genuine advances are happening all at once. Too many for me to keep up with.
In general downvotes seem like a relatively poor feedback mechanism because there's no shared agreement on how they should be used. This [1], perhaps ironically flagged, post offered feedback on why people downvote, and it's just all over the place. Even if there are guidelines, people will be people. At least with something like clear adjectives, the percent of 'intended' feedback would be higher.
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.
Right now, it's super sensitive where a little signal does a lot right at the beginning.
Stories rocket to the top because they're new and got a number of quick votes. The curve needs to be smoothed out so that things don't lurch to the top.
Edit: I've been around here for a little while. It used to be awesome to see things jump to the top (used to have a lot lower volume of posts and users), but the audience has changed a lot, and I think things need to be adjusted a bit to slow the meteoric rise aspect. Good content will surface.