Did the op said he didnt use flash, or the opposite side said he had a problem with keeping the aggro?
No? So he did well enough for 2-3 weeks player.
Its a dungeon with 90 minute mark, if you feel a tank not spamming aoe all the time makes it impossible to run, then there is something wrong with you as a dps, because your dps probably socks also if you progress so slowly.
I doubt his party was any good as well, but it was easy for them to call him, instead of looking at themselves.
As a tank myself i could easly tell which party i am playing with has a good dps or not, that factor makes up 80% of the party damage most of the time if the dps are at least decent, i could chill out and focus on keeping alive myself instead of doing most of the dmg. If they struggle to run the dungeon i guess they were not good either, yet they fast to blame
a PLD in tank stance for his poor dps, PATHETIC.