It's quite disingenuous how commentaries like yours bundle 4chan and reddit as a "virtual cesspit" of some sorts. The variegated setup of these communities makes such a comparison sound willfully stupid.

There are lots of communities within reddit and 4chan that are equally moderated and tended with curated posts and contributions and I'll be surprised you're not aware of this. HN on the other hand is a one size fit all!

Instead of pointing the finger in the other direction why don't you focus on the question OP asked?