That said, I think there is too much a pattern with recent model releases around what appears to me to be astroturfing to get to HN front page. Of course that doesn't preclude many organic comments that are excited too!
A bit of both always happens. But given how important these model releases are to justify the capex and levels of investment, I think it is pretty clear the various "front pages" of our internet are manipulated. The incentive is just too strong not to.
I'm totally open to being wrong though. Maybe the tech community is just that excited about Gemini 3's release.
On most of the front pages, negative sentiments have floated to the top, especially the Antigravity pages.
But I'd reckon that the negative sentiments at the top, combined with that there are over eight Gemini 3 posts on the front page recently, is good evidence of manipulation. This actually might be the most posted about model release this year, and if people were that excited we wouldn't have negative sentiment abound.
I think this is one of HNs biggest weaknesses. If you are a sufficiently large engineering organization with enough employees that pass the self-moderation karma thresholds, you can essentially strike down any significantly critical discussion.
I'm sure both reasons happen to some degree, just as a matter of how often is actual astroturfing vs "a small percentage of active people can't possibly just have different thoughts than me".