I opened up comp.misc and the first post was from 9 days ago arguing that women can't code, and the insinuating tirade of arguments.
I don't think you'd find that on HN at least.
I feel like since just anyone can sign up for Usenet these days instead of just the technologically motivated, communities like them have been altered significantly.
Yeah, I haven't been there myself in months (I forget, plus do not have a NNTP reader in my phone), but I don't remember it being this bad before.
Still, there are still interesting threads, and with judicious application of PLONK (something you can't do on modern web forums like HN, by the way), you can make the worst idiots out of your sight.