It's bad forum etiquette everywhere, not just on HN, and it ruins the conversation for everyone.
> When more than one person makes the same provably false claim
/shrug
Right or wrong regarding the content, you're not a one-person-army out there to single handedly defeat all the wrong-doers on HN.
If you're just here to tell people they're flat out wrong, rather than actually have a conversation, you're just spamming the thread.
And that a conversation inspired by false statements should be derailed before it strays even further into fantasyland.
I'm not telling you what to do or that what you're saying is wrong; I'm just telling you you're being rude by doing what you're doing in the way you're doing it.
If you don't care, that's up to you.