The issue is, that the tech is not a niche thing anymore - the biggest companies on earth are all tech now, and they played a very major role in installing the current US government. This topic is a great example too. Any current or future authoritarian state will be a very heavy user of technology, so it may very well be worth it debating these things here on HN.
I don't think that was ever completely true - it was always "things hackers found interesting". But what was "interesting" then was a product of the much calmer times back then – talking about Blub and build-your-own Lisps, hikes across Japan, etc.
Unfortunately, "interesting" is polarizing – and that is by design by the politicians iin power instigating this.
For when someone is a new person here, they'll then first get mildly introduced and familiar with the expectations and aspirations of space through more neutral discussions. After their initial impression they're always free to seek out these hotter discussions on /active once they realize they happen here.