the more posts are banned and shadowbanned the more like reddit this website becomes, aka a boring place for boring people to say boring things. interesting people don’t like censorship
The trouble with your argument "interesting people don't like censorship" isn't that you're wrong—it's that there are also a lot of people (many more, actually) who post dreck. If you want a forum that doesn't get overrun with internet dreck, you have to have some strategy for countering it. HN's strategy is to have a clear organizing principle (https://hn.algolia.com/?dateRange=all&page=0&prefix=true&sor...) and clear rules to support it (https://news.ycombinator.com/newsguidelines.html). That barely works, but it's a lot better than nothing.
Edit: reading some of the comments and seeing venom and vitriol. They're the opposite of the feedback I've gotten from elsewhere.