Because back then, the only communication you needed was "open this gate", then it was DPS. For a boss fight, such few communication is very lame. Its why alot of endgame players didnt like DSC for being so braindead. Eventually we figured out we could skip the communication part and just 4 ball it based on where he is position. Quick run, no talking needed, get your loot. Such a casual experience should not be considered as "winning as a team."