Also, I would say that help-bash@ and the bash IRC channel are pretty toxic.
By "toxic" I mean that there's just a general culture of negativity, insults, hazing, and assuming the worst. There's definitely a thing where computer nerds try to one-up each other, and highly technical or obscure topics like Lisp and bash tend to bring that out.
I have a memory of comp.lang.c being pretty bad too, but I didn't participate for that long, and this was long ago.
Honestly it's funny to me that people think HN is toxic, because it's not even close to those forums in my mind. (well maybe that's because I almost never read the politics threads on HN, but still)