The incivility comes more from the combination of aggression and self-righteousness. We don't need that here, and since it detracts from any true information you're conveying, there's no trade-off in simply leaving it out.
(Citing pg makes the opposite point to what I think you intended; I've never once known him to behave like that, either in writing or in person.)
The objection that I'm being uncivil is DH2, "responding to tone". Yes, my tone is dismissive, specifically because the advice being given ought to be dismissed.
If HN has become a place where unscientific, unsound folk medicine cannot be called "bullshit" then I'll happily take my leave.