The guy wanted and example of people being able to completely invalidate healers and I provided one, you aren’t doing the dungeon faster by dumping off the tank, you aren’t going faster by dumping off the DPS but you certainly are going faster by dumping off the healer
The core point is that it shouldn’t even be possible not that it’s only something more accomplished people can, seriously while GNB and DRK need some finesse any DF party doesn’t with a WAR or PLD does not need a healer and assuming none of the DPS are huffing paint you will go faster than having the healer there