Most scientific publications is BS published for the sake of pumping your numbers.
Most student memoire is BS to pass the exam.
Most financial analyses, most TV journal reporting, most tweets, most books are BS.
Ever read doctors or lawyers specialized magazines? Most pages are BS on top of BS.
Paid content, content produced to fill space, making volume, low quality authors trying to make it, agendas every where, and of course automated crap.
Why do you think HN is so successful?
The concept?
The tech?
Of course not.
It's the quality of moderation, and the fact they used their ability to publish their BS to the front page with moderation. Just enough to help them, but not so much as to destroy the average HN quality.
Dedication to quality on the long run, and restrain in milking the cow. This show visions, and it's hard.