One of the most annoying traits of Will-based attacks was the Time components it carried. A target would be suppressed in a single moment, unable to leave the attack zone until the effect of the move had run its course or its power was exhausted.
A man could easily escape a burning building if there was a clear path of escape, but if it was a Will-based attack that was made on that burning building, then he would be forced to remain inside the building until the flames had run their course or the building collapsed.
It was basically a stun lock whose duration was determined by the power of the caster.
Even with the ability of their golden flames to eat the energy, if the Blood Blessed could not break out of the Time aspect of the attack, then they would have to endure the entirety of the onslaught until its energy ran its course, that was not a feasible strategy.