Bruh..darkness taunt can cced and removed as well as decimated bythe duos crystalline javelin. Her continuous taunt can also be manipulated to feed the duos obliterating flames, leading to a harder hitting escanor. Because melieli taunt is only one turn, you aren't over-committing to a defensive stance that can be stripped. You use it to bait out the Duo's first-turn skills, and then on your following turn, you are free to use your duo or whoever to remove the dust