The problem isn't the players it's the mechanic. The LB mechanic is really poor design imho. Limit Break is meant to be a group mechanic not an extra ability/button for dps classes. Unfortunately it's poorly designed and so certain classes end up with this LB role in most fights in this game. This overall I feel is frustrating for all involved. It's frustrating for Tanks/Healers cause they see the mechanic; the gauge is on their screen. they may or may not know when it would be advantageous to do that mechanic. But alas they can't participate it in. Instead they just sit there going GAAAAAAAAAAAH! meanwhile its frustrating/stressful for the dps because it's an added role tacked onto them. It gets them unwarranted rage regardless if they know how to use it or not and makes them feel harassed. It's just a bad scenario.

And that's not putting into account the infighting when the wrong LB is used even with the best intentions. An example might be a white mage using LB to raise 4 dead people but we are in ultima hm so we need the tank lb for the orbs!!! RAAAAAAGE. The fact that the LB gauge is a group mechanic that 1 person can set off at anytime without confirmation from the group is just bad bad bad design. Add to the fact that it is used in two opposing scenarios: strategy (dps/tank lb) or reactionary (healer lb) that don't mesh well at all. And you've got the whopping mess that is Limit Breaks.