Playing MNK on and off since 2.0 and recently starting to play it in savage, I've got to say it's really disappointing. It didn't evolve at all, got simpler and has overall more restrictions than before, like skills being removed and added back to higher levels gated behind RNG crit.

Greased Lightning is still awful to manage, what's the point of it? It's braindead easy to manage now, due to Form Shift changes, and provides nearly "nothing" but faster attack speed.
The niche skill, what's up with that... and since ShB "but wait there is more" another niche skill??

Looking at the other jobs, MNK's issues and general lack of attention becomes even more apparent.
DRG has a nice "flow" to it, you make use of all your skills and you are rewarded for keeping up your buff.
NIN has an equally pointless speed gimmick, but you again make use of all your skills and everything comes nicely together.
SAM, I haven't gotten to 80 yet, is similar here with easy to re-apply speed and damage buff.

The only? job gated behind double-layer RNG for one of its skills. Which sometimes varies greatly between pulls. Of no fault of your own you will just perform worse, that does not spark joy.

Very punishing on death, assuming you use Perfect Balance - which you should, you will either go through the painful climb of 12 GCDs or stand there like a dumbass and meditate, plus a much shorter timer on your clutch buff compared to other jobs, that does not spark joy.

Limited mobility, and 0 ranged attacks, it feels slow and clunky when you have to disengage - no joy spark.

Not one but two niche skills, maybe we'll make it to 3 next expansion , that barely get any use, this also does not spark joy.

Monk was always a little underplayed but now it is the least played DPS job. Like, perhaps you should take a look at it SE??