Why do Tanks get a bad Rep?

[Eidolon]

A background on my Tanking method.....
I pull 6-12 Mobs when we start to test healer and DPS. If we all die I take things slow, and steady. But if we lived I'll pull group of mobs depending on healers limits.

IMO, rather than "Testing" DPS, you should only perform this test if the composition is appropriate for the party.

If I have a DRG+BRD, or a MNK+BRD, or a MCH+DRG, etc etc... basically non-mage classes / weaker AoE classes on limited resources, I'm not going to pull crazy. I'm going to keep my pulls small. This allows the healer to add more DPS to the fights and allows me, myself, to jump into DPS stance more consistently.

All doing big pulls with single-target based classes does is exhaust your healer's MP keeping you up for the duration of it. a SMN/BLM in the mix can help out on these AoE pulls, and that is where I might test it, but without those classes? I likely will keep it smaller to encourage faster kill rates instead of bigger mob pulls.

[Kolaina]

snip

all of this. as bard when my dps partner is a melee, my tp gets exhausted with consistent large pulls. paeon or not, especially as battle voice has no effect on the caster.
as healer when the party composition has no caster, the longer the fight drags on, you (the tank) start to run out of defensive cool downs assuming you popped more than 1 (please pop more if you still have a large pack). this results in heavier sustained heals, my own healer buffs probably down and now my resources are nearly diminished.
just because you have the hp pool to take a few hits from half the floor, doesnt mean its efficient.

[SuddenStorm8]

I unfortunately see tanks like this more often than I would like, not saying that other rolls aren't capable of this too (as a PLD I once had a healer trying to get me to multi-pull Satasha NM with a PUG and LNR as DPS who have literally no AOE at that lvl)

The most stand out experience I've had with this was a WAR who decided to pull 4 groups of mobs in Amdapor Keep with me (A BRD at the time) and a newbie ilvl50ish DRG. As BRD does when using AOE I burnt through all my TP very quickly even with invigorate so I activated Armys Paeon to restore my TP (and the TP of the DRG who had been spamming AOE attacks too) only to be called a "retard" by the tank and told he could "Manage his own TP", then when I told him it was for myself he told me to "get invigorate" after which I decided to ignore him completely. Later in the dungeon he apologized for his bad mood but the damage had been done already and I didn't care what ha had to say anymore.

Some very good points form Eidolon-Sama you should go back and read if you haven't already.

^ This yes please, don't pull big groups if you have 2 MNKs or something as your DPS, I mean really just think about what the composition of your group can handle.

[Malevicton]

All doing big pulls with single-target based classes does is exhaust your healer's MP keeping you up for the duration of it. a SMN/BLM in the mix can help out on these AoE pulls, and that is where I might test it, but without those classes? I likely will keep it smaller to encourage faster kill rates instead of bigger mob pulls.

Meh. Whm/sch can both put out more dps in AoE situations. So regardless of your dps comp, your healers will always be able to dish out a bit more with larger pulls - assuming they're good enough stance dancers to keep you up. MP is really a non-issue in dungeons.

I don't think you're necessarily right or wrong, but it depends on the healers. A boss-mode healer can make large pulls worth it even with mnk/mnk comp, but if they aren't then it doesn't matter.

Edit tldr; do what's best for your group. Just wanted to point out that there aren't really situations where small pulls are more efficient if we're assuming people are playing optimally.