By labeling them toxic, it implies the existence of non-toxic HN comments. Fringe researchers have been searching for years, but mainstream scientists regard non-toxic HN comments as a form of cryptid.
I assume you're exaggerating as a joke, but I don't think we should talk about HN like that, it becomes a self-fulfilling prophecy. I've learned to shrug and scroll past the unconstructive stuff, and still manage to learn a lot from other folks in the comment section.