Earlier quoted context omitted.
Maybe... At least I've got the impression that on HN reactions are way more professional, I see people here actually listening to the arguments of others and that's the least you need to keep things quiet. Most people here keep extremism out here anyway. Emotional arguments don't succeed to gain traction, you have to be factual and nuanced to gain respect here, and as far as I see blind extremism doesn't get that far…
Yeah, reddit started that way too. It doesn't last long.
On Reddit the comparison used to be Digg. (I left three years ago, so I don't know what happened in the mean time.)