That was a Hard Mode flashpoint and the conversation you have been given was the only exchange in the group chat. No one has blamed anybody for anything. The tank did not attempt to work with the group at all. Telling DPS to do something unconventional while watching them nearly fail and consider that reason for leaving is very low in my opinion. I did whisper the tank what I thought was necessary to make sure he does not think we had an impression he was being sarcastic.
Sorry, I did not mean to attack anyone with that. I just confirmed you can kill the turrets from afar, but I prefer to just attack unless there are two Snipers. Even then I hardly care, I know the fight and my 55's have good gear. I can pull it off.