I think you could argue it never gets fun for some jobs.

The problem is their lack of willingness to design classes from 1-max level and instead literally focusing on 50-60, 60-70, then 70-80. Each class thus can feel very old and boring since there's very little fun in the 1-50 with class mechanics/abilities taking up till 70 to get to in a lot of cases.

In comparison, when wow reworks their classes it's always going to feel different early on because they're not just tacking things on. This is an incredibly annoying habit of FFXIV's developers and you will notice it exists everywhere in game with antiquated ideas/systems. Blue mage is one stupid example of a concept no one needed and has been completely forgotten.