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.
I visit hacker news so that I can avoid current affairs news, but all too often non "hacker" stories appear on the feed and it feels like they shouldn't have made it out of New
There's no easy way to distinguish between "hacker" and "non hacker" stories because different people evaluate these expressions completely differently.