I don't agree with the OP's attitude or "wording".. But the issues he's pointing out are real. I'm gonna point out a few things I read in the "general context" of this forum thread and what their counter points are.

It's funny how people get so angry at the people who try hard and expect everyone else to try hard (A.k.a. elitists or jerks). When the exact opposite in the spectrum of try hard is as aggravating for different reasons. An elitist flaunting his e-peen is upsetting and rude (even if I'm not the target of their attacks, which is rarely the case). But also an ignorant-not-even-gonna-try "jerk" who doesn't even accept constructive criticism is just as upsetting.

"I pay my sub so I play how I want!" Sure, but I also pay the same sub. It's not like you're the only one paying or you're paying more. I also pay the VERY same sub and I expect to enjoy my time. If you wanna "play how you want" do it on your own account... Not in a dungeon with 4 others. But when you craft or undersize things or just in the open world. But don't drag me into your ignorance because you pay the very same sub I pay. You paying a sub doesn't give you a right to "suck" and drag others down just as much as it doesn't give that top-tier raider to pull his elitist attitude towards anyone because his DPS is twice that of the rest of the party combined. But come on, when 1 guy does TWICE the DPS of one other DPS + tank + healer? Or even worse.... The TANK pulling off the DPS of the 2 other DPS + healer combined?.. We have a serious issue here.

Luck doesn't factor 1200 DPS. RNG from crits and procs may contribute 100 DPS on a 3 minute dummy parse. You'll do 1650 instead of 1600 in optimal rotation and BiS on BLM, not 2600... For example. There is a reason why people ask for longer and/or multiple parses.. It's so RNG is "normalized".

Also, we all have bad days. We all can come back from work with steam popping out of our heads in anger. We all come home to worse tension at home than at work. We all have "family" issues, etc. etc. But really, if you expect to go into an instance and literally get carried, you shouldn't be playing. Trust me when I say this, I have more bad days than good ones... So often that I actually count the good days per month. I don't use that excuse to get carried. On the contrary, I vent through the game. And people who can't pull their own weight just make it worse. Luckily I rarely queue alone and it only takes 2 votes to kick for AFK, which let's be honest, you gotta be AFK if you're doing sub-600.

The mentality of: "Who cares, dungeons can be 2 manned anyways!" should really go out t he window. It is just unfair to the people "2 manning" the dungeon while you have one hand in your pants and the other on the beer bottle while watching netflix. If I want to two man a dungeon, I will literally do that. All it takes is ask a friend and literally 2 man content (either by undersizing or queuing with friends and have them leave instance). But if I want to do an under 25 minute dungeon, I do not expect someone with your mentality to go in and semi-AFK to make it 35+ and end up getting free esoterics or exp from my effort and time. I also play 2 characters and I do not want to spend whatever's left of my (already bad) day on (bad) expert roulette runs.

There is really no excuse ever to do sub 600 as a DPS (and probably a tank) class. You REALLY have to go out of your way to do some of the bad numbers those DPS on DF/PF do. Specially when we're not talking "optimal" DPS, but passably decent. Optimal DPS requires full understanding of the class, game mechanics (server ticks, latency handling, etc.) AND full knowledge of the encounters. But we're not asking for that in a Pharos Sirus HM, we're asking you to actually press your buttons. Which takes us to the next major point:

"The game not teaching people how to do their jobs" is also a very bad excuse. Do you expect it to hand you a manual with video guides of how to use your job and adapt to encounters? Where is the fun in that? That's YOUR job, not SE's. The game already does a pretty darned good job at teaching you the jobs and classes. It's almost holding your hand through your job entirely. Just look at the following things that the game already does:

1- The game doesn't throw a lot of skills at you at once, but the opposite... You literally start with 1 skill to spam (even arcanists can't summon their pets at level 1 because that's considered another ability), and the second level gives you your second ability with a pop-up help window to teach you how to use it. Whither it gives a buff (BRD and BLM), or if it combos (all melees and tanks) or whatever.

2- The game gives you 1 ability or trait every 2 levels. At level 50 you end up with 22 abilities, INCLUDING situational and dead weight ones.

3- The class and job quests give you a hint of your role and concepts behind abilities, which also happen every 5 levels. Your basic rotation is literally handed to you with ample time to learn and incorporate them.

4- Every time an ability should be used, it lights up for you. This is not just for combos, but also for procs.

5- The game requires you to play multiple classes so you end up learning multiple roles or concepts.

6- The tooltips are pretty dang detailed and easy to read. Yes there are the odd ones that have localization issues (Ninja had a flank bonus on Dancing Edge which didn't exist for example and Enochian had a pretty confusing description at first) but those get fixed fast. And that 1 ability you understood wrong won't be why you're missing over 700 DPS from the one right next to you.

7- Rotations aren't overly complicated. Outside of the openers, it's basically combo your skills, keep up buffs/debuffs and pop CDs as they come back up.

Yes it's true it doesn't apply to all jobs (Ahem LNC and Impulse drive spam for 20 levels), but come on. Stop with the "spoon-feed-me-my-rotation-and-gear" attitude. But come on, all that's left is a voice in game telling you which skill should be up next.

Now let's look at why "you have to go out of your way" to do that low DPS:

- Auto attacks are literally 25%+ of anyone that auto attack's DPS in optimal rotations. So a monk at 1500 DPS would have done 400+ worth of DPS just auto attacking.

- SMN's pet (garuda) does about 30% of its single target DPS, so if you do 1k DPS (which is barely "not bad" level), you can do 300 at least just by having your pet on sic.

- In AoE situations: Every job (with the exception of MNK and SMN) can literally spam 1 button for "decent" AoE DPS. NIN has Death Blossom, DRG has Ring of Thorns (Not optimal but wider range) and Doom Spike (if you can hit everything), WAR has Overpower, BRD has Quick knoc, so on.

You see, the problem here is not people can't learn overly complicated rotations, it's more about people not bothering to use obviously better abilities. Why spam blizzard 1 and drop thunder entirely when obviously Fire hits MUCH MUCH harder than Blizzard? How can you do 200 DPS when all you need is to auto attack + do your 1 > 2 > 3 combo to pass the 650 DPS mark. What's so hard from pressing the button that lights up after you used an ability?

I am not even expecting you to try hard... After all, it's only expert roulette. I don't expect you to pop potions and food and wear BiS.. Heck, I use my least geared DPS classes, being BRD (192) and MCH(190), when I feel like I don't wanna give it my all. I still end up with a passable over 1k DPS on bosses and over 1600 on packs. But come on, when I queue as a healer and find that the two DPS are below me and my tank on both packs and bosses? All WHILE I'm busy healing their a$$es out because they don't even bother getting out of red circles? This is far beyond ignorance and #gitgud.