[KomoD]

That's funny, he checks if the referrer is HN and then redirects to Google

      if (document.referrer) {
        const ref = new URL(document.referrer);
        if (ref.host === 'news.ycombinator.com') {
          window.location.href = 'https://google.com/';
        }
      }

[ncts]

Well: https://macwright.com/2022/09/15/hacker-news. Still, it can be easily bypassed by an extension that cleans referrer (which is more or less good for privacy I guess?)