I think it's more fun to figure out how to skillfully respond to rudeness than it is to tell others to stop being rude. Or, to figure out how to not be rude myself. Or, figure out how to respond when someone perceives what I said as rude, when I didn't mean to be rude. Anyway, the only gains I can see happening are by "being the change you wish to see."
But really, I don't see that much of a problem on DhammaWheel that needs all that much fixing really. I guess others have a different perception of the atmosphere here. The moderators do a great job of taking care of the stuff that crosses the line, and the rest I chalk up to the imperfections of human behavior. Which leaves the bulk of it, which I think is just fine - welcoming, accepting of different viewpoints and levels of familiarity with the Dhamma and so forth.
"When one thing is practiced & pursued, ignorance is abandoned, clear knowing arises, the conceit 'I am' is abandoned, latent tendencies are uprooted, fetters are abandoned. Which one thing? Mindfulness immersed in the body." -AN 1.230