MNK like others have pointed out. MNK as a job hasn't seen much change since 2.0. And the changes in 5.05 weren't as bad, being all QoL changes to remove downtime for a job that has the worst ramp-up time to start doing their ideal damage. Mantra is so contentious now when for a good portion of previous expacs it never even saw the light of day.
It's better for them to buff other jobs than to gut MNK. MNK is still the same as its always been. Only times MNK "shines" is when they remove the downtime tax that Greased Lightning imposes on MNK.
Its a game of numbers now, and likely always will be. Even if you bring in line all the jobs to be 200~ points between each "role" (Melee, PhysR and Caster) people will always find a META and people will always be excluded and these topics will likely never end.