It's true that JWs do not have a monopoly on anger and rudeness.
But actually, I haven't run into any Catholics or born-agains who are angry and rude. And actually I find just about everyone on this forum to be rather congenial. I haven't seen many labeled liars, or hate mongers or children of the devil around here.
But this is definitely not the case with the JWs I am interacting with on Quara.