People who are mad about the "limited job" didn't actually want Blue Mage.

[Malzian]

The problem with BLU is that this is not the implementation people wanted for it. Whenever it's asked for a job to be included in the game, they want it to be something that is playable in all the contexts that are available to any other job. They want it to be able to do the content in a truly meaningful way that is true to XIV and how it approaches its design.

The issue with this BLU implementation is that it doesn't even attempt to integrate in a meaningful way. This is not BLU for the sake of it being a part of the game, this is BLU for the sake of it being in the game so they can say it's there.

"You asked for BLU to be in the game, we gave it to you. Why are you complaining?"