Unfortunately this is a love hate thing.

Call it RNG if you want, but it is entirely not called no skill.

I know of people who burned over 10mil gil trying to unlock one 4 star book during the first week of 2.4.

And meanwhile here I am, not enjoying even the most average luck of anything within this game, managed to unlock the crucial WVR/LTW 4 star books within just a couple of mil, and probably one of the first 5 or 10 persons in my server that was able to do 4 star reliably from day 1-2 and made a good profit out of it.

The RNG part is indeed shitty, but having the skill to devise a reasonable workflow with it differentiates those who are at the edge of crafting game and reap the most benefit out of it, VS those who are waiting for rotations or shun it.

Selfishly speaking I am not keen in a saturated market where it seems like everyone's mum can craft the current most difficult crafts. I was rather happy being one of the few dudes who could craft and sell the 4 star items considering the amount of time and effort taken to unlock then, or even craft them at the moment.