During leveling blm most of the join in progresses i got were me main healing due to no healer, obviously if in certain situations you will be required to stop dpsing whether it be crowd control due to over pulling by tank or accidental aggro.
My point about minimum effort is aimmed towards those that just stick to their main 3 move combo stand i.e on a boss if a blm doesn't thunder, ninja doesnt maintain debuffs etc etc
This puts extra strain on the healer and tank, as a dps your job is go hard and burn things down. Some of these comments from people not willing to play a job correctly (maximise dps) are just looking to get carried.
Sure we are well overgeared now for content, but what if this was back when ilvl was lower? these people would never had passed that content