Yes, but years ago for scales, even if you rotated loot, you were able to get fragments scales EVERY run, now we taling about, you do HM run, and you can end up with 15 runs without any oculus chest, and even if you got one, it's only 100 oculus, that's like one try for accessories. You can end up to need 200 chests just to upgrade one stage( for example +17 to +18).
And at my level ( i'm very end gear), I won't bother doing Normal mode or stage 1, because it's not enough rewarding compare to the amount of materials you need for one end stage of accessories.
It's just not really motivating when you play all day/night long and can't keep up or barely keep up maxing your gear between dungeon releases