I figure it's ok to leave up the occasional commemorative post, when it's by an old and respected member of the community, so I didn't kill it. I think I'm going to have to though; the comments show HN users can't be trusted with this topic.
I think the problem is that there are very few 'hops' between "trusted, respected person writes something intelligent" and "flame wars" when the topic is emotionally loaded/political/economics/etc... Fluff articles aren't quite so bad, but I think they still beget more fluff.