DPS is the job of DPS.

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I remember this mentality in WoW raids, but not as much in dungeons.
So, based on my personal experience (which doesn't amount to much as it's all anecdotal), I would be led to believe that FF14's mentality might actually be worse.

Pretty sure that WoW tanks have to focus more on mitigation because boss melee hits aren't fluff like in this game.