I think our experiences may differ. Just looking through stories I've seen on the front page recently, there's the following:

* A slave in Scotland

* They knew it was round, damn it

* Two hundred terabyte proof is largest ever (granted, the 200 TB is not what's really interesting here)

* How the ArXiv decides what's science

* Visiting Chelsea Manning in prison

* Hiroshima (1946)

This seems like a healthy mix of topics, and they don't seem to have been deemed worthless.

I have noted a certain amount of hostility to philosophical topics, but I would venture a guess that there's been hostility to philosophy in general at all periods in history.

I expect to see a certain percentage of comments in an HN thread about how the topic is presented. Everybody's got to let off some steam sometimes. I made my initial comment because I was surprised at how many comments addressed only how the topic was presented rather than that and the actual content.