@Iscah: I regard people as bad players, if they can't even do the simplest of things in their class and refuse to accept advice. A person, who is just inexperienced, but trying to learn and improve is not a bad player in my book.
And I repeat: in no way should dungeons be savage level and require 100% perfect execution of you. But I do believe that a lvl60 dungeon should be more challenging than a lvl50 one.
The game severely lacks a difficulty curve, players get thrown into things like Rabanastre and fail miserably until they outgear the fight. If we were build up by dungeons earlier in the game to that kind of difficulty there wouldn't be so many wipes.

Btw, the sleep quest for Blm is in ARR at lvl15 I think. They made mobs beefy and hard hitting, the npc dialogue told you about sleep. You were required to sleep the mobs so you could engage one at a time or you'd get swarmed and killed. At least that's how the quest was 4 years ago when I ran it on my Blm.