He's actually right about accuracy. Aggressor lowers your damage output in Abyssea because it takes 1-2 seconds to activate and doesn't improve your damage at all on 99% of the monsters in Abyssea. Flame Skimmer and Vadlaney are the two THF type monsters I can think of where it probably helps.

I replaced my Aggressor macro with Blood Rage, which is how it'll stay until we start fighting stuff that's mildly evasive again.