I mean they do screw things up A LOT, but they aren't scared of completely overhauling a system, even in the middle of an expansion. They had basically done away with Tier Sets, Talents, even sub-specializations (for example, Single-Minded Fury and Titan's Grip Fury Warrior, or Two-hander and Dual-Wielding Frost Death Knight) to then come back with those exact things with a better system than before.
For FFXIV, its always waiting for something next expansion, and even then maybe not getting what is needed (For instance Healer issues Since ShB). Im not sure if the devs have ever said it outright, but I've been told by several people before that we will never have talents, split classes (like SMN & SCH), special effects on gear and the such. Not to be like "WoW good", but FFXIV has pretty much abandoned the idea of having pets, a thing WoW figured out all the way back in the 2000's. We used to have options for our Jobs/Roles, with cross-class and role actions or things such as choosing Selene or Eos for SCH, or your summon for SMN. We still don't have support for Viera and Hrothgar hats for gods sake even with current gear.
They might suck, but they are far from incompetent.