I used to collect posts on climate change that briefly made it to the front page since they would immediately be removed as soon as people started to realize the effects of climate change are severe. Plenty of interesting technical things to discuss around that topic, but after long enough most people realized that it wasn't worth trying to discuss that.
Most online communities today are manipulated and their messaging controlled, each through a variety of of means. I hope people are becoming increasingly skeptical of any apparent zeitgeist they think they're reading from Reddit, X, and yes, even HN. Our opinions are being shaped by a propaganda system never before imagined in history, and at the same time people seem to possess the least critical thinking skills I've seen over the course of my life.
Be critical in what you consume and no propaganda will affect you.