There are too many non-interesting, but pedantically correct comments that derail discussions. The community goal of an HN comment thread should be to unearth the most interesting, useful aspects of the submitted content. Correct but non-interesting, non-contributing comments should be down-voted.
I'd agree with this. I think too many people think HN should be startups or technology or whatever. But it's a community aggregator, with a community of voters deciding what matters. By definition, HN should be whatever it currently is. But I'd agree it should at least be interesting, if not also a tiny bit of entertaining.
What is it supposed to be?