I mean with the game suffering from the Holy Trinity ( Tank, Healer. DPS , except BLU) what did you expect?

FFXIV jobs are all about Balance so no jobs have a disadvantage over one or the other

and with that they lose their uniqueness and are more homogenized as more jobs are added

if your looking for Job Diversify, this game isn't it sadly, I would suggest giving FFXI a try as all jobs are vastly different from one another e.g Puppet Master can DPS, use their puppet as a tank or have the Puppet heal with Healer attachments, Red Mage can Heal or DPS, Bard is a heavily Support job that can DD if needed, ect