The comment from ajross above was not some gentle plea for polite discourse. What he actually said included this: "No doubt you've already made yourself heard in the other flame wars on the subject." A more accurate summary would have been, "Be polite you jerk."
People get nasty in the comments here all the time. If there's something beautiful and fragile here it's already in a thousand jagged pieces. But people hector one another about being polite all the time too. That also wrecks the signal-to-noise ratio and solves nothing.