Instructive in the sense that for any given technical controversy on HN, there will be a couple people that have some connection to the topic and can speak with some justified confidence about it, and several hundred people who read the title and, if we're lucky, the lede graf of the story and then just write stream of consciousness extrapolations --- also, instructive to note that HN does not, ceteris paribus, do a good job of upvoting the authoritative comments over the superficial riffing.