BLM: Spam fire 1 until fire starter kicks in and then blizzard 3 with Thunder 3 every now and then. Yes, that's SO hard!
SMN: Stand still and rotate through the various DoTs if they're not up but otherwise press 1 button over and over...yes, that's so hard too!
DRG: Have to worry about not only keeping DoTs up but buff/debuff and making sure to get the positioning right and not use the off GCD skills at a bad time where it can either mess up the rotation or get you killed.
Yup...sounds like someone's upset at how bad SMN is in this game and is taking it out on other classes.