Said this when first started doing it, gonna say it again: atma is bad and it needs serious adjustment. Did it for SMN, that being my main, haven't looked back ever since - two stray pieces of candy that I got randomly when jumped in to help friends out are taking up slots on my retainer, but that's it. Absolutely no intention of doing it again until it's changed. It's soul-sucking and I can clearly remember I was a mindless zombie for days after finally finishing it the first time.
What's funny is, we see all the relevant current (endgame-level-appropriate) content being nerfed ("adjusted") in almost every subsequent patch, yet this piece of...monstrosity has remained the very same ever since it came alive (when was that again?)... Oddly unbalanced stuff is oddly unbalanced. And no, the grind itself is not the problem - the problem is its absolute, exclusive gating behind RNG, which makes it nothing but a gamble, with no sense of progression. Congrats to the guy who already has 9 animus relics (and probably is storing the 12 atma needed for the NIN relic, is that what you're gonna say next, I assume?), but when someone has, say, 2 hours to play a day, what can they do? Grind FATEs for two hours straight and then end up wasting their time if nothing drops, or maybe attempt 3-5 FATEs only and do other things they can surely progress with - and risk being called lazy about atma. Great choices, either way...
There's that thread "FF 14 jokes", seeing it always makes me think of one thing - one word only: atma.