HN is a self-selecting echo chamber for people who like the content that is posted to HN.

Ok well, you didn't answer the question, you just repeated something generic you've heard here, I guess. Whether it's true or not, who knows. I'm not sure what it means exactly. How would you go about testing whether that's actually true?

I dislike a fair percentage of the topics posted here regularly, or have no interest in them, and I suspect that's not uncommon. A survey on that subject would be fascinating.

I wouldn't say there is anything here that I personally 'dislike', stuff that doesn't interest me, sure, but then I just don't read about it. I don't feel the need to down vote it though.

That's the difference I think

That makes me wonder why you choose to stop by HN. Surely there are a large number of other tech-based feeds that would suit you better.

Pendatry:D