I've complained a few times that I don't like the way the dungeon "meta" in FFXIV has turned out. Here's a good Reddit thread discussing the issue.
Basically, many players expect the tank to pull "wall-to-wall". Basically run through all the mobs from the start to a gate, where they are all then AoE'd down. It's the most efficient method of clearing a dungeon, but it also requires the players in the group to be geared and on point. Essentially it's the most fragile method.
As an aside, I've noticed the North American players in almost all games will gravitate towards the most efficient and most fragile method, which require the highest level of personal performance. Even in WoW raids. Apparently, Japanese gamers don't do this, and tend towards more fool-proof strategies even if they take more work.
There's a lot of tanks and healers in that thread who are unhappy about the meta. Perhaps a backlash will develop, and it will become okay to pull single-packs at a time. But I doubt it. Doing that would add 5 to 10 minutes to the clear time, and that is clearly a deal-breaker to impatient players.
Personally, I've just given up on tanking, and am leveling a Red Mage damage dealer. This way it doesn't really matter to me. If the tank pulls "wall-to-wall", I'll use AoE. If she pulls a single pack at a time, then I'll use a regular rotation.