Hardly anyone uses voice chat or typing. Last night I went to a new dungeon and we wiped on the last boss. So I typed what went wrong, NO answer from anyone. So we tried the boss again and another wipe. Again. I asked what went wrong and finally someone turned on their mic and explained to us how to do the fight.
And he knew that 3 of us were new to the fight because we were doing the quest. If he would have taken 2 minutes to explain the fight before the first wipe we would have never wiped the first time. And the second wipe was just flat out uncalled for.
If I was on PC some one would have explained the fight before we even started the first fight. But since I was on Xbox the guy coldn't be bothered until we wiped twice.