Unless you really want a specific skin or are an irredeemable completionist, i don't know why you would inflict yourself such an awfully designed grind.

I did it once and it will forever be a stain on my FF14 experience. It's just tedious/boring asf and managed to reduce my overall enjoyement of the game at that time.

In the end, i was happier about the fact that this thing was over than to possess the actual relic