unfortunatley i've had many pve groups with morons like this in. There's teamwork, yes, and if you're not working as a team i understand people get annoyed; heck i do. But when these morons run off on their own, expecting you to rescue them when they end up in the middle of 12 enemies, or when tehy start saying "stop. wait. now you all do x action while i do this then when i tell you do this ..." and basically trying to take charge... ugh. and of course those same people usually end up saying "This group sux! you're a bunch of losers that cant play!" then they leave the game and your remaining group wipes out the area in no time at all.
sure i can understand swearing if you die. lol who doesn't?! but not swearing AT your team. and i hate when people die then say "rez" as if you'd leave them tehre. *rolls eyes* im not gonna leave them there, i need the fire power and back up. But you can't always rez straight away; maybe not enough energy or you're still in danger of death yourself.
thing is groups like these, i'll still never abandon them. I at least finish the mission with them, because if i leave they'll keep just mucking around and getting annoyed etc etc. Plus I hate people who just leave without a word. Sure if you have a good reason to leave, by all means let me know, thats fine! But when someone has a paddy and just quits, leaving us all in the shit... gee thanks mate

Of course as soon as i get back to town i'll immediately say "gotta go afk a bit" and leave the group, then put them on ignore.
There's no point in reacting to these people though. I did the Wayward Monk quest with some. Oh jeeze... was that... er... interesting. The point between travellers vale and iron horse mines... we kept going back and forth between it. Someone would say "do this" and someone else would be halfway through saying "do that" then we'd go through, so we'd immediately be dragged BACK through so this person could finish their suggestion... then we'd go through and half the group would be under the impression we were carrying out the first tactic, and the others would be trying the second.
When we finally got it sorted out and actually worked as a team (after around 20 tries), the quest was stupidly easy and over in about 5 minutes.