Being rude, in and of itself, doesn’t break the rules in most communities. Some do say to argue in good faith or something to that effect, but none really outright ban rudeness. Maybe the “nice” communities where people go to get away from drama. I dunno. I don’t read a lot of sidebars. The way I try to conduct myself generally fits with a lot of communities. The ones it doesn’t, will kick me out. And that’s fine, to a point. I mean it’s not great but it’s also not the end of, well, anything.