Fun story:
Back in 2.0, I figured that I could stack enough vit to survive mountain busters from TitanHM as a White Mage when coupled with a virus rotation and good shielding. It worked and the agro I could generate easily outstripped anything a Tank could ever hope to generate back then.. Keep in mind that this was at a time when pugs would routinely refuse to let Warriors tank this fight.
It got nerfed immediately in the very next patch weeks later.
Fun Story 2:
Back in patch 2.3, Summoners figured you could tank Ramuh with Titan-Egi and go tankless to simplify things.
This didn't even wait for the next patch. SE promptly rolled out a hotfix to stomp this one out.
It's all hyperbole, unless you're a tank. Tell you what else is hyperbole. Suggesting you could clear HydEX's add phase easily without Tanks
Granted, I'll give you the DPS point, that's kind of a byproduct of a game that asks even less of the DPS than it does the healers.