Did you say anything unobvious? You quoted from the site that they declared it not to be a production release, and you said "OK - not for me." (I paraphrase)

We can easily deduce that, as it's not a production release, then not everyone will want it. Fine. What did your comment really add? It was a personal, conversational, largely content-free, throw-away observation.

This isn't a criticism, I'm merely trying to present a way of thinking that makes it less unreasonable for people to have down-voted a comment.

HN was always intended to be unlike other sites, strongly encouraging meaty content, strongly discouraging light and fluffy comments and submissions. It's been drifting away from that, so people are starting to feel that there's more space for conversational-like comments. There is something of a back-lash from some of the older hands who remember what it was like. Or what they think they remember it was like. More content, less conversation. Discussion, not throw-away remarks.