Given that we used accuracy debuffs to survive Nightmare Droid Salvos, I'm pretty sure I have a clue. What I'm saying is that they aren't all 90%, and even if you have several, you still need to use them strategically.
And they don't do ANYTHING for you on fights where the damage doesn't come from normal boss abilities. Try obfuscating Ball Lightnings.
Doesn't really need a nerf IMHO.
forman crushers frenzy and many other bosses that will come