From my long and most extensive experience in dealing with stupid people ^__^
Veteran of Starcraft and World of Warcraft (games plagued by armies of stupid people XD)
step 1: tell them to shut up politely
"please keep words to a minimum, it increases lag" should do
step 2: if this fails, ignore. If a player is talking to a responseless wall, he'll ussually stop talking.
step 3: if their chatting lags the game to unbearable extremes, just leave. Don't make a fuss, don't fight, don't exchange curse words, just leave and find another game
Personally I've only played for a month and there doesn't seem to be much rudeness in this game. I've only met one true rude rude rude guy but that's just once in a whole month. Most people seem to be very nice
Back on SC and WoW, the cussing and drama would become so extreme that they'd overpower the actual game. People would actually stop playing because they're angry or to prove a point. It was so bad >__<
The server disconnects are probrably just because of connection problems. I've only met one person who left because things didn't go his way, but that was just one person in a whole month.
The exploit it rampant O___O. In fact I used to use the exploit thinking it was just a part of the game until someone pointed out that it was because of a bug. I accidentally stumbled upon the whole sub over land thing and just went with it lol. I don't do it anymore though, but I think this happens often because new players just don't know any better.