Do you remember when you were doing salvage and killed normal NMs, that didn't have insta death moves, when a boss's aoe would do 500 damage and was considered dangerous, when you could kill mobs even of the easiest kind without embrava ? This time has gone and we all regret it. SE has been designing mobs and content around PD and embrava since after abyssea, and it is getting in a very bad way in my opinion.
Here is an example of why embrava broke the game ; ADL is not killable without perfect defense, we have yet to see a reported kill, even with a complete alliance of 18. Why ? because SE designed it to cast tier IV - aga spells instantaneously, it casts all enfeeble with aoe version, has severely damaging TP moves (with added effetc silence, bind, terror, petification, blind) which he spams, has instant death TP moves, can split ad infinitum,etc. So they probably designed it with the idea to use PD, and what did players do ? They used perfect defense.
3 man ADL
Here is a video showing why perfect defense is so unbalanced, as a mob that can't be killed with 18 suddenly becomes a joke with 3.