Please don't call out other HN members as shills or spam accounts. If you suspect that such activity is going on, do contact the mods via the Contact link in the footer. They actively respond to issues like this.
I'm not sure if it's in the guidelines (and you're right, I don't see it there). I've seen 'dang and 'sctb bring it up multiple times. One such example:
I'll note that 'dang is also pretty consistent about including the "without evidence" caveat as well, which I admit there does appear to be plenty. That said, contacting the mods (which I already did) is going to be the most effective way of stopping the behavior: they've got more information available and can not only get rid of the comments, but the accounts as well. Comments such as your tend to add to the noise, and unfortunately unlikely to stop the spamming. Don't misunderstand me: I'm frustrated by it as well.