Yes it is true. Passive or active mitigation is irrelevant to this statement.Every tank has the ability to trade survivability for damage. Breath of Fire is the monk's way of doing this.
Every tank has the. ability. to trade survivability for damage. Every tank CAN trade some of their survivability resource for some extra damage/threat. If they want to or the fight merits it.
Do monks have a harder time keep up their active migitation while keeping aoe threat? (an entirely different question) Maybe.