HN isn't just for news about startups and tech, it's also about topics of interest to curious critical thinkers (which pretty much defines us, don't you think?). A little bit of /r/DepthHub here is a good thing.
While the level of discourse on HN is high enough, it still suffers from the memes( as in their original definition) permeating through the content and diverting the attention to emotional, not rational issues. I for one find the emotional level on HN too high.